CA2208234A1 - Multilayered optical film - Google Patents

Multilayered optical film

Info

Publication number
CA2208234A1
CA2208234A1 CA 2208234 CA2208234A CA2208234A1 CA 2208234 A1 CA2208234 A1 CA 2208234A1 CA 2208234 CA2208234 CA 2208234 CA 2208234 A CA2208234 A CA 2208234A CA 2208234 A1 CA2208234 A1 CA 2208234A1
Authority
CA
Canada
Prior art keywords
film
layers
polymer
pen
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA 2208234
Other languages
French (fr)
Inventor
Michael F. Weber
Andrew J. Ouderkirk
Carl A. Stover
James M. Jonza
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2208234A1 publication Critical patent/CA2208234A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/023Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00Producing optical elements, e.g. lenses or prisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/30Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/30Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/36Layered products comprising a layer of synthetic resin comprising polyesters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02Physical, chemical or physicochemical properties
    • B32B7/023Optical properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G02B5/305Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3083Birefringent or phase retarding elements
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528Polarisers
    • G02F1/133536Reflective polarizers
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/13362Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00Use of polyesters or derivatives thereof, as moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/003Reflective
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0034Polarising
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/0012Mechanical treatment, e.g. roughening, deforming, stretching
    • B32B2038/0028Stretching, elongating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00Polyalkenes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2325/00Polymers of vinyl-aromatic compounds, e.g. polystyrene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2333/00Polymers of unsaturated acids or derivatives thereof
    • B32B2333/04Polymers of esters
    • B32B2333/08Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2551/00Optical elements
    • B32B2551/08Mirrors
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528Polarisers
    • G02F1/133545Dielectric stack polarisers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/91Product with molecular orientation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T428/26Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10T428/261In terms of molecular thickness or light wave length
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31507Of polycarbonate
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

Birefringent optical films (10, 12, 14) have a Brewster angle (the angle at which reflectance of p-polarized light goes to zero) which is very large or is nonexistant. This allows for the construction of multilayer mirrors and polarizers whose reflectivity for p-polarized light decreases slowly with angle of incidence, are independent of angle of incidence, or increase with angle of incidence away from the normal. As a result, multilayer films (10) having high reflectivity (for both planes of polarization for any incident direction in the case of mirrors, and for the selected direction in the case of polarizers) over a wide bandwidth, can be achieved.

Description

J 49837PCTlB CA 02208234 1997-06-19 MULTILAYERED OPIICAL FILM

BACKGROUND
The present invention relates to optical films useful, e.g., as polarizers 5 and/or mirrors.
Light-re-flP~ting devices based upon multiple polymeric layers are known.
Examples of such devices include polarizers made of alternating polymeric layersin which the layers have different refractive indices.
Q~e ~
SUMMARY
The optical pr~el~ies and design considerations of birefringent optical films described herein allow the construction of multilayer stacks for which theBrewster angle (the angle at which reflectance of p-polarized light goes to zero) is very large or is nonexistant. This allows for the construction of multilayer mirrors and polarizers whose reflectivity for p-po1arized light decreases slowlywith angle of incir1~-nce, are independent of angle of incidence, or increase with angle of incidence away from the normal. As a result, multilayer films having high reflectivity (for both s and p polarized light for any incident direction in the case of mirrors, and for the selecte~ direction in the case of polarizers) over a wide bandwidth, can be achieved.
Briefly, in one aspect the present invention provides a multilayered polymer film comprising layers of a crystalline or semi-crystalline naphth~1~n~
dic~l~o~ylic acid polyester, for example a 2,6-polyethylene naphth~1~t~ (UPEN") or a copolymer derived from ethylene glycol, naphth~1~ne dicarboxylic acid and some other acids such as terephth~l~te ("co-PEN"), with a positive stress optical coefficient, i.e. upon stretching its index of refraction in the stretch direction increases, having an average th~ nçss of not more than 0.5 microns; and layers of a sel~te~ second polymer, for example a polyethylene terephth~1~te ("PET") or a co-PEN, having an average thicl~nçcc of not more than 0.5 microns.
Preferably, after sLre~ching of the films of this invention in at least one direction, the layers of said naphthalene dicarboxylic acid polyester have a higher index of IPE~

CA 0 2 2 0 8 2 3 4 1 9 97 - 0 6 - 1 9 ~ T~
PA~ r~ 'W4LTE
~Efi~.-'r-~TSTF~. 4 ~ ~. J~n. 1997 MINNESOTA MINING & MANUFACTURING CO.
Our Ref: A 2151 PCT

- la -EP-A-0 404 463 relates to a multi-layered polymeric body which reflects light and which can be fabricated to have a silvery or hued metallic or non-conventional hued appearance. The multi-layered reflective body comprises alternating layers of diverse polymeric materials which differ in refractive index and which are either optically thick or optically very thin.

EP-A-0 488 544 relates to a multi-layered birefringent interference polarizer and more particularly to a multi-layered co-extruded polymeric device which can be designed to polarize selected wavelengths of light by constructive optical interference.

AMENDE~ SHEET
IPEAIEP /

WO 96/19347 PCT/US95/16!;55 refr~ction associated with at least one in-plane axis than the layers of the second polymer. The film of this invention can be used to pl~are multilayer films having an average reflectivity of at least 50% over at least a 100 nm wide band.In another aspect, the present invention provides a multilayered polymer 5 film compri~in$ layers of a crystalline or semi-crystalline polyester, for eY~mple a PET, having an average thickn~ss of not more than 0.5 microns; and layers of a s~lPcted second polymer, for example a polyester or a polystyrene, having an average thickn~s of not more than 0.5 microns; wherein said film has been stretched in at least one direction to at least twice that direction's unstretched 10 rlim~n~ion. The film of this invention can be used to prepare multilayer films having an average reflectivity of at least 50% over at least a 100 nm wide band.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be further explained with reference to the drawings.
Figures la and lb are diagr~mm~tical views of the polarizer of the present invention.
Figure 2 is a graphical view illustrating the refractive indices char~ct~ tics of the PEN and coPEN layers of the present invention.
Figure 3 is a graphical view of computer simulated data of percent 20 tr~n.~mi~ion of a 50-layer PEN/coPEN film stack based on the indices shown in Figure 2.
Figure 4 is a graphical view of computer simulated data of percent tr~n~mi~ion of an equally biaxially stretched 300-layer PEN/coPET mirror.
Figure 5 is a graphical view of percent measured tr~n~mi~ion of a 25 51-layer I.R. polarizer of the present invention with the first order peak near 1,300 nm.
Figure 6 is a graphical view of percent measured tr~nsmi.~ion of eight 51-layer polarizers of the present invention l~min~ted together.
Figure 7 is a graphical view of percent measured tr~n~mi~ion of a 30 204-layer polarizer of the present invention.

Figure 8 is a graphical view of percent measured tr~n~mi.c~ion of two 204-layer polarizers of the present invention l~min~t~d together.
Figure 9 is a schem~tic view of an overhead projector of the present invention.
Figure 10 shows a two layer stack of films forming a single interf~ce.
Figures 11 and 12 show reflectivity versus angle curves for a uni~xi~l birefringent system in a m~linm of index 1.60.
Figure 13 shows reflectivity versus angle curves for a uni~xi~l birefringent system in a m~inm of index 1Ø
Figures 14, 15 and 16 show various relationships between in-plane indices and z-index for a llni~xi~l birefringent system.
Figure 17 shows off axis reflectivity versus wavelength for two different biaxial birefringent systems.
Figure 18 shows the effect of introducing a y-index difference in a biaxial birefringent film with a large z-index difference.
Figure 19 shows the effect of introducing a y-index dirre.t:nce in a biaxial birefringent film with a smaller z-index difference.
Figure 20 shows a contour plot s~-mm~ri7ing the information from Figures 18 and 19;
Figures 21-26 show optical pelrol"lance of multilayer nlil~ol~ given in Examples 3-6;
Figures 27-31 show optical pe.ro mance of multilayer polarizers given in PY~mples 7-11;
Figure 32 shows the optical pelrormance of the multilayer mirror given in Example 12;
Figure 33 shows the optical pe rolmance of the AR coated multilayer reflective polarizer of Example 13;
~ Figure 34 shows the optical performance of the multilayer reflective polarizer of Example 14; and WO 96/19347 PCT/US95/165!j5 Figures 35a-c show optical performance of multilayer polarizers given in Example 15.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
The present invention as illustrated in Figures la and lb includes a multilayered polymeric sheet 10 having ~ltçrn~ting layers of a crystalline naphth~lP,n~, dicarboxylic acid polyester such as 2,6 polyethylene naphth~l~te (PEN) 12 and a sPlpcte~ polymer 14 useful as a reflective polarizer or mirror.
By sl-e~cl~ g PEN/selected polymer over a range of uniaxial to biaxial orit~nt~tion, a film is created with a range of reflectivities for differently oriented plane-pol~ri7~d incide,nt light. If stretched biaxially, the sheet can be stretched asymm~,tric~lly along orthogonal axes or symmetric~lly along orthogonal axes to obtain desired pol~ri7ing and reflecting properties.
For the polarizer, the sheet is preferably oriented by stretching in a single direction and the index of refraction of the PEN layer exhibits a large difference between incid~,nt light rays with the plane of pnl~ri7~tion parallel to the oriented and transverse directions. The index of refraction associated with an in-plane axis (an axis parallel to the surface of the film) is the effective index of refraction for plane-polarized incident light whose plane of pol~ri7~tion is parallel to that axis. By oriented direction is meant the direction in which the film is stretched.
By transverse direction is meant that direction orthogonal in the plane of the film to the direction in which the film is oriented.
PEN is a ~rer~lled m~teri~l because of its high positive stress optical coefficient and permanent birefringence after stretching, with the refractive index for pol~ri7PA incillent light of 550 nm wavelength increasing when the plane of pol~ri7~tion is parallel to the stretch direction from about 1.64 to as high as about 1.9. The differences in refractive indices associated with different in-plane axes exhibited by PEN and a 70-naphthalate/30- terephth~l~te copolyester (coPEN) for a 5:1 stretch ratio are illustrated in Figure 2. In Figure 2, the data on the lower curve represent the index of refraction of PEN in the transverse direction and the WO 96/19347 PCTIUS95/165S~

coPEN while the upper curve represents the index of refraction of PEN in the stretch direction. PEN exhibits a dirÇerellce in refractive index of 0.25 to 0.40 in the visible s~e~;L.uln. The bi,erlillgence (difference in refractive index) can be increased by increasing the molecular orient~tion. PEN is heat stable from about155~C up to àbout 230~C depentling upon ~hrink~ge requirements of the applic~tion. Although PEN has been spe~ific~lly discussed above as the plere~l~d polymer for the birefringent layer, polybutylene naphth~l~te is also asuitable m~tPri~l as well as other crystalline naphth~lPne dicarboxylic polyesters.
The crystalline naphth~lPne dicarboxylic polyester should exhibit a difference in refractive indices associated with dirrelellt in-plane axes of at least 0.05 andpreferably above 0.20.
Minor amounts of comonomers may be substituted into the naphthalene dicarboxylic acid polyester so long as the high refractive index in the stretch direction(s) is not substantially compromised. A drop in refractive index (and therefore decreased reflectivity) may be counter balanced by advantages in any of the following: adhesion to the selected polymer layer, lowered temperature of extrusion, better match of melt viscosities, better match of glass tr~n~ition ~en.pel~Lul~s for sllelchillg. Suitable monomers include those based on isophthalic, azelaic, adipic, sebacic, dibenzoic, terephthalic, 2,7- naphth~l~neicarboxylic, 2,6-naphth~l~ne dicarboxylic or cyclohexanedicarboxylic acids.
The PEN/selected polymer resins of the present invention preferably have similar melt viscosities so as to obtain uniform multilayer coextrusion. The twopolymers preferably have a melt viscosity within a factor of 5 at typical shear rates.
The PEN and the preferred selected polymer layers of the present invention exhibit good adhesion properties to each other while still rem~ining as discrete layers within the multilayered sheet.
The glass transition temperatures of the polymers of the present invention are comp~tible so adverse effects such as cracking of one set of polymer layers during stretching does not occur. By compatible is meant that the glass transition te~ dlulc of the selected polymer is lower than the glass transition Lelllpe aLIlre of the PEN layer. The glass transition temperature of the selected polymer layerIc;,ll~el~tule may be slightly higher than the glass transition temperature of the PEN layer, but by no more than 40~C.
S Preferably, the layers have a 1/4 wavelength thickness with dirrelellt sets of layers decign~d to reflect different wavelength ranges. Each layer does not have to be exactly 1/4 wavelength thick. The overriding requirement is that the ~dj~cPnt low-high index film pair have a total optical thickn~ss of O.S
wavelength. The bandwidth of a 50-layer stack of PEN/coPEN layers having the index dirr~ tial in-lic~ted in Figure 2, with layer thicknesses chosen to be a 1/4 wavelength of 550 nm, is about S0 nm. This 50-layer stack provides roughly a 99 percent average reflectivity in this wavelength range with no measurable absorption. A co",pu~l-modeled curve showing less than 1 percent tr~n~mi~ion (99 percent reflectivity) is illustrated in Figure 3. Figures 3-8 include data ch~r~cteri7ed as percent tr~n~mi~ion. It should be understood that since there is no me~m~hle absorbance by the film of the present invention that percent reflectivity is approxim~ted by the following relationship:
100 - (percent tr~n~mi~ciQn) = (percent reflectivity).
The pl~rell~d s~-lPcted polymer layer 14 remains isotropic in refractive index and subst~nti~lly m~t~hes the refIactive index of the PEN layer associatedwith the transverse axis as illustrated in Figure la. Light with its plane of pol~ri7~tion in this direction will be predomin~ntly tr~n~mitted by the polarizer while light with its plane of pol~ri7~tion in the oriented direction will be reflected as illustrated in Figure lb.
The reflective polarizer of the present invention is useful in optical elem~nt~ such as ophth~lmic lenses, mirrors and windows. The polarizer is characterized by a mirror-like look which is considered stylish in sl-ngl~ses. In ~-lrlition, PEN is a very good ultraviolet filter, absorbing ultraviolet efficiently up to the edge of the visible spectrum. The reflective polarizer of the present invention would also be useful as a thin infrared sheet polarizer.

For the polarizer, the PEN/selectéd polymer layers have at least one axis for which the associated indices of refraction are preferably substantially e~ual.
The match of refractive indices associated with that axis, which typically is the transverse axis, results in subst~nti~lly no reflection of light in that plane of 5 pol~ri7~tion The selected polymer layer may also exhibit a decrease in the refractive index ~sori~t~A with the stretch direction. A negative birefringence of the s~Qlectçd polymer has the advantage of increasing the dirrerence between indices of refraction of adjoining layers associated with the orientation axis while the reflection of light with its plane of pol~ri7~tion parallel to the transverse 10 direction is still negligible. Differences between the transverse-axis-associated indices of refraction of adjoining layers after stretching should be less than 0.05 and preferably less than 0.02. Another possibility is that the selected polymer exhibits some positive birefringence due to stretching, but this can be relaxed to match the refractive index of the transverse axis of the PEN layers in a heat 15 tre~tmP-nt The lel"p~l~ture of this heat tre~tmçnt should not be so high as to relax the birefringence in the PEN layers.
The plere~led selected polymer for the polarizer of the present invention is a copolyester of the reaction product of a naphthalene dicarboxylic acid or its ester such as dimethyl naphth~l~te ranging from 20 mole percent to 80 mole 20 percent and isophthalic or terephthalic acid or their esters such as dimethylterephth~l~te r~nging from 20 mole percent to 80 mole percent reacted with ethylene glycol. Other copolyesters within the scope of the present invention have the Ll~elLies discussed above and have a refractive index associated with the transverse axis of approxim~tçly 1.59 to 1.69. Of course, the copolyester 25 must be coextrudable with PEN. Other suitable copolyesters are based on isoI~hth~lic, azelaic, adipic, sebacic, dibenzoic, terephthalic, 2,7- naphth~l~ne dic~l,o~ylic, 2,6-naphth~lçne dicarboxylic or cyclohexanedicarboxylic acids.
Other suitable variations in the copolyester include the use of ethylene glycol,propane diol, butane diol, neopentyl glycol, polyethylene glycol, tetramethylene30 glycol, diethylene glycol, cyclohex~ne~limethanol, 4-hydroxy diphenol, propane WO 96/19347 PCT/US9~;/16555 diol, bisphenol A, and 1,8-dihydroxy biphenyl, or 1,3-bis(2-hydlv~y~Llloxy)benzene as the diol reactant. A volume average of the refractive indices of the monomers would be a good guide in plel)a~ g useful copolyesters. In addition, copolycarbonates having a glass transition S le~ ature compatible with the glass transition temperature of PEN and with a refractive index associated with the transverse axis of approximately 1.59 to 1.69 are also useful as a selected polymer in the present invention. Formation of thecopolyester or copolycarbonate by tr~ncesterification of two or more polymers inthe extrusion system is another possible route to a viable selected polymer.
To make a mirror, two uniaxially stretched pol~ri7ing sheets 10 are positioned with their respective orientation axes rotated 90~, or the sheet 10 is biaxially stretched. In the latter case, both PEN refractive indices in the plane of the sheet increase and the selected polymer should be chosen with as low of a refractive index as possible to reflect light of both planes of pol~ri7~tion.
15 Biaxially stretching the multilayered sheet will result in differences between refractive indices of adjoining layers for planes parallel to both axes thereby res--lting in reflection of light in both planes of polarization directions. Biaxially ~L etchillg PEN will increase the refractive indices associated with those axes of elongation from 1.64 to only 1.75, compared to the uniaxial value of 1.9.
20 Therefore to create a ~lielectric mirror with 99 percent reflectivity (and thus with no noticeable iridescence) a low refractive index coPET is prerelled as the selected polymer. Optical modeling indicates this is possible with an index of about 1.55. A 300-layer film with a 5 percent standard deviation in layer thickn~sc, decigned to cover half of the visible spectrum with six overlapping 25 4u~L~ e stacks, has the predicted performance shown in Figure 4. A greater degree of symmetry of stretching yields an article that exhibits relatively moresymmetric reflective plupellies and relatively less pol~ri7ing properties.
If desired, two or more sheets of the invention may be used in a col"L~osite to increase reflectivity, optical band width, or both. If the optical 30 thicknesses of pairs of layers within the sheets are substantially equal, the col,.posile will reflect, at somewhat greater efficiency, subst~nti~lly the sameband width and spectr~l range of reflectivity (i.e., "band") as the individual sheets. If the optical thicknes~es of pairs of layers within the sheets are not subst~nti~lly equal, the composite will reflect across a broader band width thanS the individual sheets. A composite combining mirror sheets with polarizer sheets is useful for increasing total reflect~nce while still pol~ri7ing tr~n~mitted light.
~ltP~"~ ely, a single sheet may be asymm~tric~lly biaxially stretched to produce a film having selective reflective and polarizing properties.
The ~rert;lled select~l polymer for use in a biaxially stretched mirror 10 application is based on terephthalic, isophthalic, sebacic, azelaic or cyclohex~n~licarboxylic acid to attain the lowest possible refractive index while still maintaining adhesion to the PEN layers. Naphthalene dicarboxylic acid may still be employed in minor amounts to improve the ~-lheciQn to PEN. The diol component may be taken from any that have been previously mentioned.
15 Preferably the selected polymer has an index of refraction of less than 1.65 and more preferably an index of refraction of less than 1.55.
It is not required that the selected polymer be a copolyester or copolycarbonate. Vinyl polymers and copolymers made from monomers such as vinyl naphth~l~nes, styrenes, ethylene, maleic anhydride, acrylates, 20 meth~crylates, might be employed. Condensation polymers other than polyestersand polycarbonates might also be useful, examples include: polysulfones, polyamides, polyu~tl,alles, polyamic acids, polyimides. Naphthalene groups and halogens such as chlorine, bromine and iodine are useful in increasing the refractive index of the selected polymer to the desired level (l.S9 to 1.69) to 25 subst~nti~lly match the refractive index of PEN associated with the transverse direction for a polarizer. Acrylate groups and fluorine are particularly useful in decreasing refractive index for use in a mirror.
Figure 9 illustrates the use of the present invention as a hot mirror in an overhead projector 30. The projector 30 is a tr~n~mi~ive-type projector, and has30 many features of a conventional overhead projector, including a base 32 and a projection head 34. The projection head 34 is 7~tt~chçd to the base 32 by an arm(not shown), which may be raised or lowered thereby moving the head 34 toward or away from the base 32, by conventional adjll~tm~nt means. The base 32 include~ a light source 36, a power supply (not shown) for the light source 36, 5 and a~o~?liate optical components such as a mirror 38 for directing the light toward a projection stage area 40. The stage area 40 in a conventional overhead projector in~ des a tr~ncp~rent sheet such as glass typically having at least one fresnel lens integr~lly formed therein for focusing light toward the head 34. If a tr~ncr~rency having a visual image is placed on the stage 40, the image is 10 collected and projected such as to a nearby projection screen or surface by conventional optics such as a mirror 42 and lens 44 located within the head 34.
A mirror 46 of the present invention is advantageously used in the overhead projector 30 to reflect the heat-producing infrared energy from the light source 36 while tr~ncmitting visible light. When used to reflect infrared energy, 15 the mirror 46 is used as a hot mirror. This is especially illlpOl ~It for inc~ndescçnt light sources where about 85 percent of the emitted energy is in the infrared wavelength. The infrared energy, if uncontrolled, can cause excessive heating of dense tr~ncr~rencies or LCD projection panels that are placed on the projection stage 40. When used as a hot mirror, the mirror 46 is normally 20 positioned between the light source 36 and the projection stage 40. The mirror 46 can be a separate element or the mirror can be applied to an optical component as a coating in the light path between the light source and the projection stage.
~lt~rn~tively, the mirror 46 can be used in the overhead projector 30 as a 25 cold mirror, that is a mirror that reflects visible light, while tr~ncmitting infrared energy. The mirror of the present invention may also be positioned as a folding mirror (not shown) between the light source 36 and the projection stage 40.
R~oflect~nce of a multilayer cold mirror can easily approach 95 percent for visible light. The mirror of the present invention can be applied as a cold mirror 30 coating to a spherical concave reflector such as reflector 38 that is placed behind the light source 36 to collect and redirect visible light emitted from the lightsource while tr~ncmitting infrared energy.
Orient~tion of the extruded film was done by ~LIeLching individual sheets of the m~teri~l in heated air. For economical prod~lc.tion, stretching may be accomr)li.ched on a continuous basis in a standard length orienter, tenter oven, or both. Economies of scale and line speeds of standard polymer film production may be achieved thereby achieving manuf~ctllring costs that are subst~nti~lly lower than costs associated with commercially available absorptive polarizers.
T~min~tinn of two or more sheets together is advantageous, to improve reflectivity or to broaden the bandwidth, or to form a mirror from two polarizers. Amorphous copolyesters are useful as l~min~ting m~teri~lc, with VITEL Brand 3000 and 3300 from the Goodyear Tire and Rubber Co. of Akron, Ohio, noted as m~teri~lc that have been tried. The choice of l~min~ting m~t~ri~lis broad, with adhesion to the sheets 10, optical clarity and exclusion of air being the primary guiding principles.
It may be desirable to add to one or more of the layers, one or more inorganic or organic adjuvants such as an antioxidant, extrusion aid, heat stabilizer, ultraviolet ray absorber, nucleator, surface projection forming agent, and the like in normal quantities so long as the addition does not substantiallyinterfere with the pelrol~ ce of the present invention.

Optical Behavior and Desi~n Considerations of Multilayer Stacks The optical behavior of a multilayer stack 10 such as that shown above in Figs. la and lb will now be described in more general terms.
The optical properties and design considerations of multilayer stacks described below allow the construction of multilayer stacks for which the Brew~lel angle (the angle at which reflect~nce goes to zero) is very large or is~ nonexistant. This allows for the construction of multilayer mirrors and polarizers whose reflectivity for p pol~ri7ed light decrease slowly with angle of incidence, are independent of angle of incidence, or increase with angle of incidence away WO 96/19347 PCT/US95/16~5 from the normal. As a result, multilayer stacks having high reflectivity for both s and p pr)l~ri7~d light over a wide bandwidth, and over a wide range of angles can be achieved.
~he average tr~n.cmiccion at normal incidPn~.e for a multilayer stack, (for S light pol~ri7ed in the plane of the extinction axis in the case of polarizers, or for both pol~ri7~tions in the case of mirrors), is desirably less than 50 % (reflectivity of 0.5) over the intentletl bandwidth. (It shall be understood that for the purposes of the present application, all tr~n.cmi.ccion or reflection values given include front and back surface reflections). Other multilayer stacks exhibit lower average tr~ncmiccion and/or a larger intended bandwidth, and/or over a larger range of angles from the normal. If the intended bandwidth is to be centered around one color only, such as red, green or blue, each of which has an effective bandwidth of about 100 nm each, a multilayer stack with an average tr~ncmi.c.cion of less than 50% is desirable. A multilayer stack having an average tr~ncmi.c.cion of less than 10% over a bandwidth of 100 nm is also prefelled. Other exemplary pl~rt;lled mutlilayer stacks have an average tr~ncmi.~cion of less than 30% over a bandwidth of 200 nm. Yet another prefelled multilayer stack exhibits an average t~n.cmiccion of less than 10% over the bandwidth of the visible spectrum (400-700 nm). Most prerelled is a multilayer stack that exhibits an average tr~n.cmi.ccion of less than 10% over a bandwidth of 380 to 740 nm. The extended bandwidth is useful even in visible light applications in order to accommodate spectral shifts with angle, and variations in the multiiayer stack and overall film caliper.
The multilayer stack 10 can include tens, hundreds or thousands of layers, and each layer can be made from any of a number of different materials. The char~.tt~.ri.ctics which determine the choice of m~t~ri~lc for a particular stack depend upon the desired optical ~lrol-l-ance of the stack.
The stack can contain as many materials as there are layers in the stack.
For ease of manufacture, prerelled optical thin film stacks contain only a few CA 02208234 1997-06-l9 dirrt;lc~t m~teri~l~ For purposes of illustration, the present discussion will describe multilayer stacks inclu-ling two m~teri~
The-bol-n-l~ries belween the m~tPri~l~, or chçmiç~lly ;denti~l m~teri~l~
with different physical p.~;,lies, can be abrupt or gradual. Except for some 5 simple cases with analytical solutions, analysis of the latter type of stratified media with continuously varying index is usually treated as a much larger number of thinner unifo~ layers having abrupt bolln~l~ries but with only a smallchange in pr~elLies between adjacent layers.
Several parameters may affect the maximum reflectivity achievable in any 10 multilayer stack. These include basic stack design, optical absorption, layerthickmPss control and the relationship between indices of refraction of the layers in the stack. For high reflectivity and/or sharp bandedges, the basic stack design should incorporate optical intelrereilce effects using standard thin film opticsdesign. This typically involves using optically thin layers, m~ning layers having 15 an optical thickne~ in the range of 0.1 to 1.0 times the wavelength of interest.
The basic building blocks for high reflectivity multilayer films are low/high index pairs of film layers, wherein each low/high index pair of layers has a combined optical thicknPss of 1/2 the center wavelength of the band it is desi~ned to reflect. Stacks of such films are commonly referred to as 20 ~lu~ ~l w~e stacks.
To minimi7e optical absorption, the ~r~f~ d multilayer stack ensures that wavelengths that would be most strongly absorbed by the stack are the firstwavelengths reflertPA by the stz~c-k. Por most clo~r OptlC I m.telizil-" ir,Llu.ling most polymers, absorption increases toward the blue end of the visible spectrum.25 Thus, it is prerelled to tune the multilayer stack such that the "blue" layers are on the incident side of the multilayer stack.
A multilayer construction of alternative low and high index thick films, often referred to as a "pile of plates", has no tuned wavelengths nor bandwidth constraints, and no wavelength is selectively reflected at any particular layer in 30 the stack. With such a construction, the blue reflectivity suffers due to higher penPtr~tic)n into the stack, res~ ing in higher absorption than for the p~ ed ~lu~ w~e stack design. Arbitrarily increasing the number of layers in a "pile of plates" will not always give high reflectivity, even with zero absorption.
Also, a-biL,dlily increasing the number of layers in any stack may not give the 5 desired reflectivity, due to the increased absorption which would occur.
The relationships between the indices of refraction in each film layer to each other and to those of the other layers in the film stack detPrmine the reflectance behavior of the multilayer stack at any angle of incidence, from anyazimuthal direction. ~llming that all layers of the same material have the same 10 indices, then a single interface of a two component quarterwave stack can be analyzed to understand the behavior of the entire stack as a function of angle.
For simplicity of discussion, therefore, the optical behavior of a single intPrf~e will be described. It shall be understood, however, that an actual multilayer stack according to the principles described herein could be made of 15 tens, hundreds or thousands of layers. To describe the optical behavior of a single interface, such as the one shown in Fig. 10, the reflectivity as a function of angle of incidence for s and p polarized light for a plane of incidçnce inclll~ing the z-axis and one in-plane optic axis will be plotted.
Fig. 10 shows two m~tPri~l film layers forming a single interface, with 20 both immersed in an isotropic medium of index no. For simplicity of illustr~tion, the present discussion will be directed toward an orthogonal multilayer birefringent system with the optical axes of the two materials ~ nPd,and with one optic axis (z) perpendicular to the film plane, and the other opticaxes along the x and y axis. It shall be understood, however, that the optic axes 25 need not be orthogonal, and that nonorthogonal systems are well within the spirit and scope of the present invention. It shall be further understood that the optic axes also need not be aligned with the film axes to fall within the intended scope of the present invention.
The reflectivity of a dielectric interface varies as a function of angle of 30 incid~Pnce, and for isotropic m~tPri~l~, is different for p and s polarized light.

WO 96/19347 PCT/US9~/16555 The reflectivity ~inh~u~ for p polarized light is due to the so called Brew~Ler effect, and the angle at which the reflectance goes to zero is referred to as Brt;~v~Lel 's angle.
The reflectance behavior of any film stack, at any angle of incjdence~ is S deterrnined by the dielectric tensors of all films involved. A general theoretical tre~tmPnt of this topic is given in the text by R.M.A. Azzam and N.M. R~.ch~r~, "Ellipsometry and Po1~ri7~ Light", published by North-Holland, 1987.
The reflectivity for a single interface of a system is calculated by squaring the absolute value of the reflection coefficients for p and s pol~ri7ed light, given lO by equations l and 2, respectively. Equations l and 2 are vaIid for uniaxial orthogonal systems, with the axes of the two components aligned.

1) rpp = n2z * n20 ~i(nlz2 - no2sin2~) - nlz * nlo ~(n2z2 - no2sin2~) n2z * n20 ~I(nlz2 - no2sin2~) + nlz * nlo ~I(n2z2 - no2sin2~) 2) rS5 = ~1(nlo2 - no2sin2~ 1(n202 - no2sin2~) ~1(nlo2 - no2sin2~) + ~(n202 - no2sin2~) where ~ is measured in the isotropic mylium.
In a uni~xi~l birefringent system, nlx = nly = nlo, and n2x = n2y =
20.
For a biaxial birefringent system, equations l and 2 are valid only for light with its plane of polarization parallel to the x-z or y-z planes, as defined in Fig. lO. So, for a biaxial system, for light incident in the x-z plane, nlo = nlx and n20 = n2x in equation l (for p-po1~ri7~1 light), and nlo = nly and n20 =
n2y in equation 2 (for s-polarized light). For light incident in the y-z plane, nlo = nly and n20 = n2y in equation l (for p-polarized light), and nlo = nlx and n20 = n2x in equation 2 (for s-polarized light).
Equations l and 2 show that reflectivity depends upon the indices of refraction in the x, y (in-plane) and z directions of each material in the stack. In an isotropic m~t~ l, all three indices are equal, thus nx = ny = nz. The -relationship between nx, ny and nz determine the optical characteri~tics of the m~t~ri~l. Dirrtrt;l~t rel~tiQn~hiI)s between the three indices lead to three general c~Legolies of m~teri~ isotropic, uniaxially birefringent, and biaxially birefringent. Equations 1 and 2 describe biaxially birefringent cases only along5 the x or y axis, and then only if considered s~L)an~t~ly for the x and y directions.
A uniaxially birefringent material is defined as one in which the index of refraction in one direction is different from the indices in the other two directions. For purposes of the present discussion, the convention for describing llni~xi~lly birefrin~e-nt systems is for the condition nx = ny ~ nz. The x and y10 axes are defined as the in-plane axes and the respective indices, nx and ny, will be referred to as the in-plane indices.
One method of creating a uniaxial birefringent system is to biaxially stretch (e.g., stretch along two ~limen~ions) a multilayer stack in which at least one of the m~teri~l~ in the stack has its index of refraction affected by the lS stretching process (e.g., the index either increases or decreases). Biaxial tclling of the multilayer stack may result in differences between refractive indices of adjoining layers for planes parallel to both axes thus res--ltin~ in reflectiQn of light in both planes of pol~ri7~tic~n.
A llni~xi~l birefringent m~t~ri~l can have either positive or negative 20 uni~xi~l birefringence. Positive uniaxial birefringence occurs when the z-index is greater than the in-plane indices (nz > nx and ny). Negative uniaxial birefringence occurs when the z-index is less than the in-plane indices (nz < nx ~ and ny).
A biaxial birefringent m~t~ri~l is defined as one in which the indices of 25 refraction in all three axes are dirrerellt, e.g., nx ny f nz. Again, the nx and ny indices will be referred to as the in-plane indices. A biaxial birefringent system can be made by ~lletcllillg the multilayer stack in one direction. In other words the stack is uniaxially stretched. For purposes of the present discussion,the x direction will be referred to as the stretch direction for biaxial birefringent 30 stacks.

Uniaxial Birefringent Systems (Mirrors) The optical Llo~lLies and design concide.r~tions of uniaxial birefringent systems will now be discussed. As discussed above, the general conditions for a l-ni~ l birefringent m~t~ri~l are nx = ny ~ nz. Thus if each layer 102 and 104 in Fig. 10 is ~Ini~xi~lly birefringent, nlx = nly and n2x = n2y. For purposes of the present ~1iccllCcion, assume that layer 102 has larger in-plane indices than layer 104, and that thus nl > n2 in both the x and y directions. The optical behavior of a uniaxial birefringent multilayer system can be adjusted by varyingthe values of nlz and n2z to introduce different levels of positive or negative birefringence. The relationship between the various indices of refraction can bemeasured directly, or, the general relationship may be indirectly observed by analysis of the spectra of the reslllting film as described herein.
In the case of mirrors, the desired average tr~n.cmi.scion for light of each lS pol~ri7~tion and plane of incidence generally depends upon the intended use of the mirror. The average tr~n.cmiccion along each stretch direction at normal incidence for a narrow bandwidth mirror across a 100 nm bandwidth within the visible spectrum is desirably less than 30%, preferably less than 20~ and more preferably less than 10%. A desirable average tr~n.cmiccion along each stretch direction at normal incidence for a partial mirror ranges anywhere from, for example, 10% to 50%, and can cover a bandwidth of anywhere between, for example, 100 nm and 450 nm, depending upon the particular application. For a high efficiency mirror, average tr~n.cmiccion along each stretch direction at normal incidence over the visible spectrum (400-700nm) is desirably less than 10%, preferably less than 5%, more preferably less than 2~, and even more preferably less than 1%. In addition, asymmetric ~ lUlS may be desirable for certain applic~tiQn.c. In that case, average tr~n.cmiccion along one stretch direction may be desirably less than, for example, 50%, while the average tr~n.cmiCcion along the other stretch direction may be desirably less than, for example 20%, over a bandwidth of, for example, the visible spectrum WO 96/19347 PCT/US9!i/16555 (400-700 nm), or over the visible spectrum and into the near infrared (e.g, 400-850 nm).
Equation 1 described above can be used to determine the reflectivity of a single interf~e in a uni~xi~l birefringent system composed of two layers such asS that shown in Fig. 10. Equation 2, for s p~ ri~ed light, is i~entic~l to that of the case of isotropic films (nx = ny = nz), so only equation 1 need be ~ minPd. For L,ul~oses of illustration, some specific, although generic, valuesfor the film indices will be ~ign~d Let nlx = nly = 1.75, nlz = variable, n2x = n2y = 1.50, and n2z = variable. In order to illuskate various possible 10 Brc~w~l~r angles in this system, no = 1.60 for the surrounding isotropic media.
Fig. 11 shows reflectivity versus angle curves for p-polarized light inrident from the isotropic medium to the birefringent layers, for cases where nlz is numerically greater than or equal to n2z (nlz 2 n2z~. The curves shown in Fig. 11 are for the following z-index values: a) nlz =1.75, n2z = 1.50; b) nlz = 1.75, n2z = 1.57; c) nlz = 1.70, n2z = 1.60; d) nlz = 1.65, n2z =
1.60; e) nlz = 1.61, n2z = 1.60; and f) nlz = 1.60 = n2z. As nlz approaches n2z, the Brewster angle, the angle at which reflectivity goes to zero, increases.
Curves a - e are strongly angular dependent. However, when nlz = n2z (curve f), there is no angular dependence to reflectivity. In other words, the reflectivity for curve f is constant for all angles of incidence. At that point, equation 1 reduces to the angular independent form: (n2O - nlo)/(n2O ~ nlo). When nlz = n2z, there is no Brewster effect and there is constant reflectivity for all angles of inci~l~nce.
Fig. 12 shows reflectivity versus angle of incidence curves for cases where nlz is numPric~lly less than or equal to n2z. Light is incident from isotropic medium to the birefringent layers. For these cases, the reflectivity monotonically increases with angle of incidence. This is the behavior that wouldbe observed for s-pol~ri7ed light. Curve a in Fig. 12 shows the single case for s polarized light. Curves b-e show cases for p polarized light for various values of nz, in the following order: b) nlz =1.50, n2z = 1.60; c) nlz = 1.55, n2z =

WO 96/19347 PCT/US9~/165S5 1.60; d) nlz =1.59, n2z = 1.60; and e) nlz = 1.60 = n2z. Again, when nlz = n2z (curve e), there is no Brewster effect, and there is constant reflectivity for all angles of incidence.
Fig. 13 shows the same cases as Fig. 11 and 12 but for an incident 5 medium of index no =1.0 (air). The curves in Fig. 13 are plotted for p polarized light at a single interface of a positive uniaxial m~t~ri~l of indices n2x = n2y = 1.50, n2z = 1.60, and a negative uniaxially birefringent tn~teri~l with nlx = nly = 1.75, and values of nlz, in the following order, from top to bottom, of: a) 1.50; jb) 1.55; c) 1.59; d) 1.60; f) 1.61; g) 1.65; h) 1.70; and 10 i) 1.75. Again, as was shown in Figs. 11 and 12, when the values of nlz and n2z match (curve d), there is no angular dependence to reflectivity.
Figs. 11, 12 and 13 show that the cross-over from one type of behavior to another occurs when the z-axis index of one film equals the z-axis index of the other film. This is true for several combinations of negative and positive 15 uniaxially birefringent, and isotropic m~t~ri~l~. Other situations occur in which the Br~w~L~l angle is shifted to larger or smaller angles.
Various possible relationships between in-plane indices and z-axis indices are illustrated in Figs. 14, 15 and 16. The vertical axes indicate relative values of indices and the horizontal axes are used to separate the various conditions.
20 Each Figure begins at the left with two isotropic films, where the z-index equals the in-plane indices. As one proceeds to the right, the in-plane indices are held con~t~nt and the various z-axis indices increase or decrease, indic~ting the relative amount of positive or negative birefringence.
The case described above with respect to Figs. 11, 12, and 13 is 25 illustrated in Fig. 14. The in-plane indices of m~teri~l one are greater than the in-plane indices of m~t~ri~l two, material 1 has negative birefringence (nlz less than in-plane indices), and material two has positive birefringence (n2z greaterthan in-plane indices). The point at which the Brewster angle disappears and reflectivity is constant for all angles of incidence is where the two z-axis indices , CA 02208234 1997-06-l9 WO 96/19347 PCT/US9!;/165~5 are equal. This point corresponds to curve f in Fig. 11, curve e in Fig. 12 or curve d in Fig. 13.
In Fig. 15, m~t~ri~l one has higher in-plane indices than m~ttqri~l two, but m~teri~l one has positive birefringence and m~teri~l two has negative S birefringence. In this case, the Brewster minimum can only shift to lower values of angle.
Both Figs. 14 and 15 are valid for the limiting cases where one of the two films is isotropic. The two cases are where m~t~n~l one is isotropic and m~teri~l two has positive birefringence, or material two is isotropic and m~t~ri~l one has 10 negative birefringence. The point at which there is no Brew~le- effect is where the z-axis index of the birefringent material equals the index of the isotropic film.
Another case is where both films are of the same type, i.e., both negative or both positive birefringent. Fig. 16 shows the case where both films have 15 negative birefringence. However, it shall be understood that the case of two positive birefringent layers is analogous to the case of two negative birefringent layers shown in Fig. 16. As before, the Brewster minimum is elimin~ted only if one z-axis index equals or crosses that of the other film.
Yet another case occurs where the in-plane indices of the two m~t~ ls 20 are equal, but the z-axis indices differ. In this case, which is a subset of all three cases shown in Figs. 14 - 16, no reflection occurs for s polarized light at any angle, and the reflectivity for p pol~ri7ed light increases monotonically with increasing angle of incidence. This type of article has increasing reflectivity for p-pnl~ri7~d light as angle of incidence increases, and is transparent to s-polarized 25 light. This article can be referred to as a "p-polarizer~.
The above described principles and design considerations describing the behavior of uniaxially birefringent systems can be applied to create multilayer stacks having the desired optical effects for a wide variety of circum~t~nce~ and applications. The indices of refraction of the layers in the multilayer stack can 30 be manipulated and tailored to produce devices having the desired optical WO 96/19347 PCT/US9~/16S55 propellies. Many negative and positive uniaxial birefringent systems can be created with a variety of in-plane and z-axis indices, and many useful devices can be dç~ign~d and f~bric~ted using the principl~s described here.

Biaxial Bire~rlin~ent Systems (Polarizers) Referring again to Fig. 10, two component orthogonal biaxial birefringent systems and the design considerations affecting the result~nt optical p~ ies will now be described. Again, the system can have many layers, but an underst~n-iin~ of the optical behavior of the stack is achieved by ex~mining theoptical behavior at one interface.
A biaxial birefringent system can be designed to give high reflectivity for light with its plane of polarization parallel to one axis, for a broad range of angles of incidence, and simultaneously have low reflectivity and high tr~nsmis~ion for light with its plane of polarization parallel to the other axis for a broad range of angles of incidence. As a result, the biaxial birefringent systemacts as a polarizer, tr~n~mitting light of one pol~ri7~tion and reflecting light of the other pol~ri7~tion By controlling the three indices of refraction of each film, nx, ny and nz, the desired polarizer behavior can be obtained. Again, the indices of refraction can be measured directly or can be indirectly observed by analysisof the spectra of the resulting film, as described herein.
Referring again to Fig. 10, the following values to the film indices are ~igned for purposes of illustration: nlx = 1.88, nly = 1.64, nlz = variable, n2x = 1.65, n2y = variable, and n2z = variable. The x direction is referred to as the extinction direction and the y direction as the tr~ncmi~ion direction.
Equation 1 can be used to predict the angular behavior of the biaxial birefringent system for two important cases of light with a plane of incidence in either the stretch (xz plane) or the non-stretch (yz plane) directions. The polarizer is a mirror in one polarization direction and a window in the other direction. In the stretch direction, the large index differential of 1.88 - 1.65 =
0.23 in a multilayer stack with hundreds of layers will yield very high WO 96/19347 PCT/US9!;/1655 reflectivities for s-pnl~ri7~d light. For p-polarized light the reflectance at various angles depends on the nlz/n2z index dirr~lelltial.
In many applications, the ideal reflecting polarizer has high refl~ct~nce along one axis (the so-called extinction axis) and zero reflectance along the other 5 (the so-called tr~ncmic.cion axis), at all angles of incidence. ~or the tr~ncmic.cion axis of a polarizer, it generally desirable to maximize tr~n.cmiccit n of light pol~ri7:~A in the direction of the tr~n.cmi.c.cion axis over the bandwidth of interest and also over the range of angles of interest. Average tr~n.cmic.cion at normal in~.idence for a narrow bandpolarizer across a 100 nm bandwidth is desirably at 10least 50%, preferably at least 70% and more preferably at least 90%. The average tr~ncmi.cc-~ n at 60 degreees from the normal for p-polarized light (measured along the tr~n.cmi.ccion axis) for a narrow band polarizer across a 100 nm bandwidth is desirably at least 50%, preferably at least 70% and more preferably at least 80%.
15The average tr~ncmiccion at normal incidence for a polarizer in the tr~ncmicsion axis across the visible spectrum (400-700 nm for a bandwidth of 300 nm) is desirably at least 50%, preferably at least 70%, more preferably at least 85%, and even more preferably at least 90%. The average tr~ncmic.cion at 60 degrees from the normal (measured along the tr~n~mi.~.cion axis) for a 20 polarizer from 400-700 nm is desirably at least 50%, preferably at least 70%, more preferably at least 80%, and even more preferably at least 90%.
For certain applications, high reflectivity in the tr~n.cmic.cinn axis at off-normal angles are prerelled. The average reflectivity for light polarized along the tr~n.cmiccion axis should be more than 20% at an angle of at least 25 20 degrees from the normal.
If some reflectivity occurs along the tr~nsmiC.cion axis, the efficiency of the polarizer at off-normal angles may be reduced. If the reflectivity along thetr~ncmi.c.cion axis is different for various wavelengths, color may be introduced into the tr~ncmitt~ light. One way to measure the color is to determine the root30 mean square (RMS) value of the tr~n.cmiccivity at a selected angle or angles over WO 96/19347 PCT/US95/16~55 the wavelength range of interest. The % RMS color, R~fS, can be det~ ined according to the equation:

~((T- )2)~12 (~ T

where the range ~1 to ~2 is the wavelength range, or bandwidth, of int~ , T
is the tr~n.cmi.ccivity along the tr~ncmiccion axis, and T is the average tr~ncmiccivity along the tr~nsmicsion axis in the wavelength range of interest.
For applications where a low color polarizer is desirable, the % RMS
color should be less than 10%, preferably less than 8%, more preferably less than 3.5%, and even more preferably less than 2.1% at an angle of at least 30 degrees from the normal, preferably at least 45 degrees from the normal, and even more preferably at least 60 degrees from the normal.
Preferably, a reflective polarizer combines the desired % RMS color along the tr~ncmicsion axis for the particular application with the desired amount of reflectivity along the extinction axis across the bandwidth of interest. For example, for narrow band polarizers having a bandwidth of appru~imately 100 nm, average tr~ncmiccion along the extinction axis at normal incidence is desirably less than 50%, preferably less than 30%, more preferably less than 10%, and even more preferably less than 3%. For polarizers having a bandwidth in the visible range (400-700 nm, or a bandwidth of 300 nm), average tr~ncmiccion along the extinction axis at normal incidence is desirably less than 40%, more desirably less than 25%, preferably less than 15%, more preferably less than 5 % and even more preferably less than 3 % .
Reflectivity at off-normal angles, for light with its plane of pol~ri7~tion p~r~llel to the tr~ncmiccion axis may be caused by a large z-index micm~tch, even if the in-plane y indices are m~trlled. The resulting system thus has large reflectivity for p, and is highly transparent to s polarized light. This case was referred to above in the analysis of the mirror cases as a "p polarizer".
For llni~xi~lly stretched polarizers, p~lror,.lallce depends upon the relationships between the ~lt~."~ g layer indices for all three (x, y, and z) direction~. As described herein, it is desirable to minimi7e the y and z index dirr~c;~lials for a high efficiency polarizer. Introduction of a y-index mi~m~t~h is describe to co---pellsate for a z-index mi~m~t~h. Whether intentionally addedor n~tnr~lly occllrring, any index micm~tch will introduce some reflectivity. AnhllL~olL~l factor thus is making the x-index differential larger than the y- andz-index differentials. Since reflectivity increases rapidly as a function of index dirr~rel.lial in both the stretch and non-stretch directions, the ratios ~ny/~nx and ~nz/~nx should be minimi7~1 to obtain a polarizer having high extinction along one axis across the bandwidth of interest and also over a broad range of angles,while preserving high tr~n~mi~sion along the orthogonal axis; Ratios of less than 0.05, 0.1 or 0.25 are acceptable. Ideally, the ratio ~nz/~nx is 0, but ratios of less than 0.25 or 0.5 also produce a useable polarizer.
Fig. 17 shows the reflectivity (plotted as -Log[l-R]) at 75 ~ for p pt)l~ri7:~d light with its plane of incidence in the non-stretch direction, for an 800 layer stack of PEN/coPEN. The reflectivity is plotted as function of wavelength across the visible spectrum (400 - 700 nm). The relevant indices for curve a at 550 nm are nly =1.64, nlz = 1.52, n2y = 1.64 and n2z = 1.63. The model stack design is a linear thicknt~c~ grade for ~ alL~,~ave pairs, where each pairthickn~ is given by dn = do + do(0.003)n. All layers were assigned a random thicl~npss error with a g~nc~i~n distribution and a 5% standard deviation.
Curve a shows high off-axis reflectivity across the visible spectrum along the tr~n~mi~sitn axis (the y-axis) and that different wavelengths experience dirrerent levels of reflectivity. This is due to the large z-index micm~tch (~nz= 0.11). Since the spectrum is sensitive to layer thickness errors and spatial nonu.liruf...ities, such as film caliper, this gives a biaxial birefringent system 30 with a very nonunifol--- and "colorful" a~L)ea~;~lce. Although a high degree of -WO 96/19347 PCTIUS9!;/16555 color may be desirable for certain applications, it is desirable to control the degree of off-axis color, and minimi7e it for those applications requiring a ullirollll, low color appearance, such as liquid crystal displays or other types of displays.
Off-axis reflectivity, and off-axis color can be minimi7e~ by introducing an index micm~trh to the non-stretch in-plane indices (nly and n2y) that create a Brt;w~Lel con-lition off axis, while keeping the s-pol~ri7~tiQn reflectivity to a minim~m .
Fig. 18 explores the effect of introducing a y-index micm~tch in reducing off-axis reflectivity along the tr~ncmiccion axis of a biaxial birefringent system.
With nlz = 1.52 and n2z = 1.63 (~nz = 0.11), the following conditions are plotted for p pol~ri7ed light: a) nly = n2y = 1.64; b) nly = 1.64, n2y =
1.62; c) nly = 1.64, n2y = 1.66. Curve a shows the reflectivity where the in-plane indices nly and n2y are equal. Curve a has a reflect~nce minimum at lS 0~, but rises steeply after 20~. For curve b, nly > n2y, and reflectivity increases rapidly. Curve c, where nly < n2y, has a reflectance minimum at 38~, but rises steeply thereafter. Considerable reflection occurs as well for s pol~ri7ed light for nly ~ n2y, as shown by curve d. Curves a-d of Fig. 18 indicate that the sign of the y-index micm~t~ll (nly - n2y) should be the same as the z-index micm~trh (nlz- n2z) for a Brewster minimum to exist. For the case of nly = n2y, reflectivity for s polarized light is zero at all angles.
By reduring the z-axis index difference between layers, the off axis reflectivity can be further reduced. If nlz is equal to n2z, Fig. 13 indicates that the extinction axis will still have a high reflectivity off-angle as it does at normal incirlence, and no reflection would occur along the nonstretch axis at any anglebecause both indices are matched (e.g., nly = n2y and nlz = n2z).
Exact m~tching of the two y indices and the two z indices may not be ~ possible in some multilayer systems. If the z-axis indices are not matched in a polarizer construction, introduction of a slight mi~m~tch may ~e desired for in-plane indices nly and n2y. This can be done by blending additional CA 02208234 l997-06-l9 WO 96/19347 PCT/IJS9~/16555 co"lpollents into one or both of the m~ttori~l layers in order to increase or decrease the respective y index as described below in Example 15. Rlenr~ing a second resin into either the polymer that forms the highly birefringent layers or into the polymer that forms the selected polymer layers may be done to modify 5 reflectiQn for the tr~nsmi~ion axis at normal and off-normal angles, or to modify the extin~ tion of the polarizer for light polarized in the extinction axis.
The second, blended resin may accomplish this by modifying the crystallinity and the index of refraction of the polymer layers after orientation.
Another ~Y~mple is plotted in FIG. 19, ~suming nlz = 1.56 and n2z = 1.60 (~nz = 0.04), with the following y indices a) nly = 1.64, n2y = 1.65;
b) nly = 1.64, n2y = 1.63. Curve c is for s-polarized light for either case.
Curve a, where the sign of the y-index mi~m~tch is the same as the z-index mi.~m~t~h, results in the lowest off-angle reflectivity.
The col-l~uled off-axis reflectance of an 800 layer stack of films at 75~
angle of incidence with the conditions of curve a in Fig. 19 is plotted as curve b in Fig. 17. Comparison of curve b with curve a in Fig. 17 shows that there is far less off-axis reflectivity, and therefore lower perceived color and better uniformity, for the conditions plotted in curve b. The relevant indices for curve b at 550 nm are nly = 1.64, nlz = 1.56, n2y = 1.65 and n2z = 1.60.
Fig. 20 shows a contour plot of equation 1 which summarizes the off axis reflectivity discussed in relation to Fig. 10 for p-polarized light. The four independent indices involved in the non-stretch direction have been reduced to two index mi~m~tch~s, ~nz and ~ny. The plot is an average of 6 plots at various angles of incidence from 0~ to 75~ in 15 degree increments. The reflectivity ranges from 0.4 x 10-4 for contour a, to 4.0 x 10-4 for contour j, in constant increments of 0.4 x 10 -4. The plots intlic~te how high reflectivity caused by an index micm~t~h along one optic axis can be offset by a mi~m~trh along the other axis.
Thus, by redu~ing the z-index mi~m~tch between layers of a biaxial birefringent systems, and/or by introducing a y-index mi~m~tcll to produce a Blcw~r effect, off-axis reflectivity, and therefore off-axis color, are minimi7ed along the tr~ncmi~ion axis of a multilayer reflecting polarizer.
It should also be noted that narrow band polarizers operating over a narrow wavelength range can also be designed using the principles described herein. These can be made to produce polarizers in the red, green, blue, cyan, magenta, or yellow bands, for example.
An ideal reflecting polarizer should transmit all light of one pol~ri7~tion, and reflect all light of the other polarization. Unless l~min~t~l on both sides to glass or to another film with a clear optical adhesive, surface reflections at the air/reflecting polarizer interface will reduce the tr~n~micsion of light of the desired polarization. Thus, it may in some cases be useful to add an antireflection (AR) coating to the reflecting polarizer. The AR coating is preferably dçsi~n~d to dereflect a film of index 1.64 for PEN based polarizers in air, because that is the index of all layers in the nonstretch (y) direction. The same coating will have çss~-nti~lly no effect on the stretch direction because the alternating index stack of the stretch direction has a very high reflection coefficient irrespective of the presence or absence of surface reflections. Any AR coating known in the art could be applied, provided that the coating does notoverheat or damage the multilayer film being coated. An exemplary coating would be a qua,lel~ave thick coating of low index m~t~ri~l, ideally with index near the square root of 1.64 (for PEN based materials).

Materials Selection and Processing With the above-described design considerations established, one of o~lillaly skill will readily appreciate that a wide variety of m~t~n~ can be used to form multilayer mirrors or polarizers according to the invention when processed under conditions selected to yield the desired refractive index relationships. The desired refractive index relationships can be achieved in a variety of ways, including stretching during or after film formation (e.g., in the ~ 30 case of organic polymers), extruding (e.g., in the case of liquid crystalline m~teri~l~), or coating. In addition, it is prerelled that the two materials have similar rheological pr~lies (e.g., melt viscosities) such that they can be co-extruded.
In general, a~)r~liate combinations may be achieved by selecting, as the first m~tPri~l, a crystalline or semi-crystalline material, preferably a polymer.
5 The second m~tPri~l, in turn, may be crystalline, semi-crystalline, or amorphous.
The second m~t~-ri~l may have a birefringence opposite to or the same as that ofthe first m~tPri~l. Or, the second material may have no birefringence.
Specific çY~mrles of suitable m~tPri~ls include polyethylene naphth~l~tP
(PEN) and isomers thereof (e.g., 2,6-, 1,4-, 1,5-, 2,7-, and 2,3-PEN), 10 polyalkylene terephth~l~tPs (e.g., polyethylene terephthalate, polybutylene terephth~l~tP, and poly-l ,4-cyclohex~ne~limethylene terephth~l~te), polyimides (e.g., polyacrylic imides), polyetherimides, atactic polystyrene, polycarbonates, polym~-th~rrylates (e.g., polyisobutyl meth~rrylate, polypropylmeth~rrylate, polyethylmethacrylate, and polymethylmethacrylate), polyacrylates (e.g., 15 polybutylacrylate and polymethylacrylate), syndiotactic polystyrene (sPS), syndiotactic poly-alpha-methyl styrene, syndiotactic polydichlorostyrene, copolymers and blends of any of these polystyrenes, cellulose derivatives (e.g.,ethyl cellulose, cellulose acetate, cellulose propionate, cellulose acetate butyrate, and cellulose nitrate), polyalkylene polymers (e.g., polyethylene, polypropylene, 20 polybutylene, polyisobutylene, and poly(4-methyl)pentene), fluorinated polymers (e.g., perfluoroalkoxy resins, polytetrafluoroethylene, fluorinated ethylene-propylene copolymers, polyvinylidene fluoride, and polychlorotrifluoroethylene), chlorinated polymers (e.g., polyvinylidene chloride and polyvinylchloride), polysulfones, polyethersulfones, polyacrylonitrile, 25 poly~mides, silicone resins, epoxy resins, polyvinyl~et~te, polyether-amides,ionomeric resins, elastomers (e.g., polyb~lt~liP-ne, polyisoprene, and neoprene), and polyur~ es. Also suitable are copolymers, e.g., copolymers of PEN
(e.g., copolymers of 2,6-, 1,4-, 1,5-, 2,7-, and/or 2,3-naphthalene dicarboxylicacid, or esters thereof, with (a) terephthalic acid, or esters thereof; (b) 30 isophthalic acid, or esters thereof; (c) phthalic acid, or esters thereof; (d) alkane -CA 02208234 1997-06-l9 glycols; (e) cyçlo~lk~nt~- glycols (e.g., cyclohexane ~limeth~nol diol); (f) alkane dicarboxylic acids; and/or (g) cyclo~lk~ne dicarboxylic acids (e.g., cyclohPY~nedicarboxylic acid)), copolymers of polyalkylene terepht~ tes (e.g., copolymers of terephlllalic acid, or esters thereof, with (a) naphthalene dicarboxylic acid, or 5 esters thereof; (b) isophthalic acid, or esters thereof; (c) phthalic acid, or esters thereof; (d) alkane glycols; (e) cycloalkane glycols (e.g., cyclohexane ~imtoth~nol diol); (f) alkane dicarboxylic acids; and/or (g) cyclo~lk~ne dicarboxylic acids (e.g., cyclohexane dicarboxylic acid)), styrene copolymers (e.g., styrene-but~lipne copolymers and styrene-acrylonitrile copolymers), and 10 copolymers of 4,4'-bibenzoic acid and ethylene glycol. In addition, each individual layer may include blends of two or more of the above-described polymers or copolymers (e.g., blends of SPS and atactic polystyrene). The coPEN described may also be a blend of pellets where at least one component is a polymer based on naphthalene dicarboxylic acid and other components are 15 other polyesters or polycarbonates, such as a PET, a PEN or a co-PEN.
Particularly ~lefel,ed combinations of layers in the case of polarizers include PEN/co-PEN, polyethylene terephthalate (PET)/co-PEN, PEN/sPS, PET/sPS, PEN/Eastar, and PET/Eastar, where "co-PEN" refers to a copolymer or blend based upon naphthalene dicarboxylic acid (as described above) and 20 Eastar is polycyclohexanedimethylene terephthalate commercially available from F~ctm~n Chemical Co.
Particularly pl~fe~led combinations of layers in the case of mirrors include PET/Ecdel, PEN/Ecdel, PEN/sPS, PEN/THV, PEN/co-PET, and PET/sPS, where "co-PET" refers to a copolymer or blend based upon 25 terephthalic acid (as described above), Ecdel is a thermoplastic polyester commercially available from F~ctm~n Chemical Co., and THV is a fluoropolymer commercially available from 3M Co.
The number of layers in the device is selected to achieve the desired optical l,-opelLies using the minimum number of layers for reasons of film 30 thickness, flexibility and economy. In the case of both polarizers and mirrors, - =

the number of layers is preferably less than 10,000, more preferably less than 5,000, and (even more preferably) less than 2,000.
As rli~su~ed above, the ability to achieve the desired relationships among the various indices of refraction (and thus the optical plo~lLies of the multilayer device) is inflllPnced by the proces~ing conditions used to ~re~are the multilayer device. In the case of organic polymers which can be oriented by ~lretclling, the devices are generally prepared by co-extruding the individual polymers to form amultilayer film and then ori~nting the film by stretching at a sPlPctPA
te,~ dLure, optionally followed by heat-setting at a SPlPCtp~d temperature.
~lt~ ely, the extrusion and nrient~tion steps may be performed simultaneously. In the case of polarizers, the film is stretched substantially in one direction (lmi~xi~l orientation), while in the case of mirrors the film is stretched subst~nti~lly in two directions ~biaxial orientation).
The film may be allowed to ~iimen~ionally relax in the cross-stretch direction from the natural reduction in cross-stretch (equal to the square root of the stretch ratio) to being constrained (i.e., no substantial change in cross-stretch tlimPn~ions). The film may be stretched in the machine direction, as with a length ~rienter, in width using a tenter.
The pre-stretch temperature, stretch temperature, stretch rate, stretch ratio, heat set telllpeld~ul~, heat set time, heat set relaxation, and cross-stretch relaxation are SPlPCtpcl to yield a multilayer device having the desired refractive index rel~tion~hir. These variables are imer-dependent; thus, for example, a relatively low stretch rate could be used if coupled with, e.g., a relatively low stretch lelll~ld~ule. It will be apparent to one of ordinary skill how to select the a~?J?r~pliate combination of these variables to achieve the desired multilayer device. In general, however, a stretch ratios in the range from 1:2 to 1:10 (more ~lefeldbly 1:3 to 1:7) in the stretch direction and from 1:0.5 to 1:10 (more preferably from 1:0.5 to 1:7) orthogonal to the stretch direction is prerelred.
Suitable multilayer devices may also be pr~al~d using techniques such as spin coating (e.g., as described in Boese et al., J. Polym. Sci.: Part B, 30:1321 (1992) for birefringent polyimides, and vacuum deposition (e.g., as described byZang et. al., Appl. Phys. Letters, 59:823 (1991) for crystalline organic co,lll ounds; the latter technique is particularly useful for certain combinations of crystalline organic compounds and inorganic m~tPri~
S The invention will now be described by way of the following e7c~mpl~c.
In the examples, because optical absorption is negligihle, reflection equals 1 minus tr~n~mi~ion (R = 1 - T).

EXAMPLE 1 (Polarizer) PEN and a 70 naphthalate/30 terephthalate copolyester (coPEN) were synthPsi7PA in a standard polyester resin kettle using ethylene glycol as the diol.
The intrinsic viscosity of both the PEN and the coPEN was a~r~imately 0.6dl/g. Single layer films of PEN and coPEN were extruded and then uni~xi~lly stretched, with the sides restrained, at approximately 150~C. As extruded, the PEN exhibited an isotropic refractive index of about 1.65, and thecoPEN was characteri7Pd by an isotropic refractive index of about 1.64. By isotropic is meant that the refractive indices associated with all axes in the plane of the film are subst~nti~lly equal. Both refractive index values were observed at 550 nm. After stretching at a 5-1 sketch ratio, the refractive index of the PEN ~c~oci~ted with the oriented axis increased to approximately 1.88. The refractive index associated with the transverse axis dropped slightly to 1.64.
The refractive index of the coPEN film after stretching at a 5:1 stretch ratio r~-rn~inPd isotropic at approximately 1.64.
A ~ti~f~tory multilayer polarizer was then made of alternating layers of PEN and coPEN by coextrusion using a 51-slot feed block which fed a standard extrusion die. The extrusion was run at approximately 295~C. The PEN was extruded at approximately 23 lb/hr and the coPEN was extruded at ~ a~ uxim~tPly 22.3 lb/hr. The PEN skin layers were approximately three times as thick as the layers within the extruded film stack. All internal layers were designPd to have an optical 1/4 wavelength thickness for light of about 1300 nm. The Sl-layer stack was extruded and cast to a thickness of approxim~tely 0.0029 inches, and then uniaxially stretched with the sides restrained at approximately a 5:1 stretch ratio at appru~imately 150~C. The stretched film had a thicknPc~ of approximately 0.0005 inches.
The stretched film was then heat set for 30 seconds at a~,ro,-imately 230~C in an air oven. The optical spectra were e-ssenti~lly the same for film that was stretched and for film that was subsequently heat set.
Figure 5 is a graphical view of percent measured tr~ncmi.~sion of the Sl-layer stack in both an oriented direction 50 and in a transverse direction 52prior to heat setting.
Eight 51-layered polarizers, each made as described above, were combined using a fluid to elimin~te the air gaps forming a polarizer of 408 optical layers. Figure 6 is a graph that characterizes the 408 layers showing percent tr~n~mi~ion from 350 to 1,800 nm in both an oriented direction 54 and in a transverse direction 56.

EXAMPLE 2 (Polarizer) A c~ticf~ctQry 204-layered polarizer was made by extruding PEN and coPEN in the 51-slot feedblock as described in Example 1 and then employing 5 two layer doubling mlllti~liers in series in the extrusion. The m--ltipliers divide the extruded m~t~-ri~l exiting the feed block into two half-width flow streams, then stack the half-width flow streams on top of each other. U.S. Patent 3,565,985 describes similar coextrusion multipliers. The extrusion was rol,.,ed at approxim~t~ly 295~C using PEN at an intrinsic viscosity of 0.50 dl/g at 22.5 lb/hr while the coPEN at an intrinsic viscosity of 0.60 dl/g was run at 16.5 lb/hr. The cast web was approximately 0.0038 inches in thicknesc and was uniaxially stretched at a 5:1 ratio in a longitudinal direction with the sides restrained at an air temperature of 140~C during stretching.
Except for skin layers, all pairs of layers were designed to be 1/2 wavelength 15 optical thickn~-sc for 550 nm light. In the tr~ncmiccion spectra of Figure 7 two reflection peaks in the oriented direction 60 are evident from the tr~ncmiccion spectra, centered about 550 nm. The double peak is most likely a result of film errors introduced in the layer multipliers, and the broad background a result ofcumulative film errors throughout the extrusion and casting process. The 20 tr~ncmiccion spectra in the transverse direction is indicated by 58. Optical extinction of the polarizer can be greatly improved by l~min~ting two of thes films together with an optical adhesive.
Two 204-layer polarizers made as described above were then hand-l~min~t~d using an optical adhesive to produce a 408-layered film stack.
25 Preferably the refractive index of the adhesive should match the index of theisotropic coPEN layer. The reflection peaks evident in Figure 7 are smoothed out for a l~min~t~d sample, as shown in Figure 8. This occurs because the peak reflectivity occurs at dirr~ t wavelengths for different areas of the film, in arandom pattern. This effect is often referred to as "iridescence". T ~min~tiQn of 30 two films reduces iridescence because the random variations in color do not WO 96/19347 PCT/US95/16!j55 match from one film to another, and tend to cancel when the films are overlapped.
Figure 8 illustrates the tr~n.cmiccion data in both the oriented direction 64 and transverse direction 62. Over 80 percent of the light in one plane of S pol~ri7~tit n is reflecte~ for wavelengths in a range from approximately 450 to 650 nm.
The iric~escPnce is eccenti~lly a measure of nonunirollllities in the film layers in one area versus ~ ent areas. With perfect thicknçsc control, a film stack centered at one wavelength would have no color variation across the sample. Multiple stacks decignçd to reflect the entire visible spectrum will have iriclescPnce if ci~nifiç~nt light leaks through random areas at random wavelengths, due to layer thickness errors. The large differential index betweenfilm layers of the polymer systems presented here enable film reflectivities of greater than 99 percent with a modest number of layers. This is a great advantage in P1imin~ting iri~escence if proper layer thicknP-cc control can be achieved in the extrusion process. Computer based optical modeling has shown that greater than 99 percent reflectivity across most of the visible spectrum ispossible with only 600 layers for a PEN/coPEN polarizer if the layer thickn~cc values are controlled with a standard deviation of less than or equal to 10 percent.

EXAMPLE 3 (PET:Ecdel. 601~ Mirror) A coextruded film cont~ining 601 layers was made on a sequential flat-film-making line via a coextrusion process. A Polyethylene terephth~l~t~
(PET) with an Intrinsic Viscosity of 0.6 dl/g (60 wt. % phenol/40 wt. %
dichlorobenzene) was delivered by one extruder at a rate of 75 pounds per hour and Ecdel 9966 (a thermoplastic elastomer available from F~ctm~n Chemical) was delivered by another extruder at a rate of 65 pounds per hour. The PET was on the skin layers. The feedblock method (such as that described in U.S. Patent 3,801,429) was used to generate 151 layers which was passed through two multirliers producing an extrudate of 601 layers. U.S. Patent 3,565,985 describes Plr~mpl~ry coextrusion mllltipliers. The web was length nriPnted to a draw ratio of about 3.6 with the web temperature at about 210~F. The film was subsequently preheated to about 235~F in about S0 secQn~ls and drawn in the S transverse direction to a draw ratio of about 4.0 at a rate of about 6% per - second. The film was then relaxed about 5 % of its maximum width in a heat-set oven set at 400~F. The fini~hed film thickness was 2.5 mil.
The cast web produced was rough in texture on the air side, and provided the tr~n~mi~ion as shown in Figure 21. The % tr~n~mi~ion for p-polarized light at a 60~ angle (curve b) is similar the value at normal incidence (curve a) (with a wavelength shift).
For comparison, film made by Mearl Corporation, presumably of isotropic m~tt-ri~ (see Fig. 22) shows a noticeable loss in reflectivity for p-pol~ri7~d light at a 60~ angle (curve b, compared to curve a for normal incidence).

EXAMPLE 4 (PET:Ecdel~ 151. Mirror) A coextruded film containing lS l layers was made on a sequential flat-film-making line via a coextrusion process. A Polyethylene terephth~l~te (PET) with an Intrinsic Viscosity of 0. 6 dl/g (60 wt phenol/40 wt. %
dichlorobenzene) was delivered by one extruder at a rate of 75 pounds per hour and _cdel 9966 (a thermoplastic elastomer available from F~ctm~n Chemical) was delivered by another extruder at a rate of 65 pounds per hour. The PET was on the skin layers. The feedblock method was used to generate 151 layers. The web was length oriented to a draw ratio of about 3.5 with the web telllpe~ure atabout 210~F. The film was subsequently preheated to about 215~F in about 12 seconds and drawn in the transverse direction to a draw ratio of about 4.0 at a ~ rate of about 25% per second. The film was then relaxed about 5% of its maximum width in a heat-set oven set at 400~F in about 6 seconds. The fini~h~
film thickness was about 0.6 mil.

The tr~n~mi~cion of this film is shown in Figure 23. The % tr~ncmi~ion for p-polarized light at a 60~ angle (curve b) is similar the value at normal in~iden~e (curve a) with a wavelength shift. At the same extrusion conl1itionc the web speed was slowed down to make an infrared reflecting film with a thickn~cs of about 0.8 mils. The tr~ncmiccinn is shown in Fig. 24 (curve a at normal inci<l~nce, curve b at 60 degrees).

EXAMPLE 5 (PEN:Ecdel, 225, Mirror) A coextruded film cont~ining 225 layers was made by extruding the cast web in one operation and later orienting the film in a laboratory film-stretching app~d~us. A Polyethylene naphthalate (PEN) with an Intrinsic Viscosity of 0.5 dl/g (60 wt. % phenol/40 wt. % dichlorobenzene) was delivered by one extruder at a rate of 18 pounds per hour and Ecdel 9966 (a thermoplastic elastomer available from F~ctm~n Ch~mic~l) was delivered by another extruder at a rate of 17 pounds per hour. The PEN was on the skin layers. The feedblock method was used to generate 57 layers which was passed through two mnltirliers producing an extrudate of 225 layers. The cast web was 12 mils thickand 12 inches wide. The web was later biaxially oriented using a laboratory ~ e~cl~ g device that uses a pantograph to grip a square section of film and .cimlllt~nPously stretch it in both directions at a uniform rate. A 7.46 cm square of web was loaded into the stretcher at about 100~C and heated to 130~C in 60 seconds. Stretching then commenced at 100%/sec (based on original t1imPn~ionc) until the sample was stretched to about 3.5x3.5. Tmmedi~tely after the ~L-e~clling the sample was cooled by blowing room temperature air on it.
Figure 25 shows the optical response of this multilayer film (curve a at normal incidence, curve b at 60 degrees). Note that the % tr~ncmiccion for p-pol~ri7ed light at a 60~ angle is similar to what it is at normal incidence (with some wavelength shift).

WO 96/19347 . PCT/US95/16555 EXAMPLE 6 (PEN:THV 500~ 449. Mirror~
A coextruded film cont~ining 449 layers was made by extruding the cast web in one operation and later orienting the film in a laboratory film-s~ cllinga~p~dlus. A Polyethylene naphthalate (PEN) with an Tntrin~ic Viscosity of 0.53 dl/g (60 wt. % phenol/40 wt. % dichlorobenzene) was delivered by one extruder at a rate of 56 pounds per hour and THV 500 (a fluoropolymer available from Minnesota Mining and Manufacturing Company) was delivered by another extruder at a rate of 11 pounds per hour. The PEN was on the skin layers and 50% of the PEN was present in the two skin layers. The feedblock method was used to generate 57 layers which was passed through three multipliers producing an extrudate of 449 layers. The cast web was 20 mils thick and 12 inches wide.
The web was later biaxially oriented using a laboratory stretching device that uses a pantograph to grip a square section of film and simultaneously stretch it in both directions at a uniform rate. A 7.46 cm square of web was loaded into the stretcher at about 100~C and heated to 140~C in 60 seconds. Stretching then commPnce~ at 10%/sec (based on original ~limen~ions) until the sample was stretched to about 3.5x3.5. Tmme~ t~-ly after the stretching the sample was cooled by blowing room temperature air at it.
Figure 26 shows the tr~n~mic~ion of this multilayer ~1lm. Again, curve a shows the response at normal incidence, while curve b shows the response at 60 degrees.

EXAMPLE 7 (PEN:CoPEN 449--Low Color Polarizer) A coextruded film containing 449 layers was made by extrudlng the cast web in one operation and later orienting the film in a laboratory film-stretching a~ dtus. A Polyethylene naphthalate (PEN) with an Intrinsic Viscosity of 0.56 dl/g (60 wt. % phenol/40 wt. % dichlorobenzene) was delivered by one ~ extruder at a rate of 43 pounds per hour and a CoPEN (70 mol% 2,6 NDC and 30 mol% DMT) with an intrinsic viscosity of 0.52 (60 wt. % phenol/40 wt. ~
dichlorobenzene) was delivered by another extruder at a rate of 25 pounds per hour. The PEN was on the skin layers and 40% of the PEN was present in the two skin layers. The feedblock method was used to generate 57 layers which was passed through three multipliers producing an extrudate of 449 layers. The cast web was 10 mils thick and 12 inches wide. The web was later llni~xi~lly c~ ont~ using a laboratory stretching device that uses a pantograph to grip a square section of film and stretch it in one direction while it is con.s~r~ined in the other at a uniform rate. A 7.46 cm square of web was loaded into the stretcher at about 100~C and heated to 140~C in 60 seconds. Stretching then commencecl at 10%/sec (based on origin~ mPncions) until the sample was stretched to about 5.5xl. TmmeAi~t~.ly after the stretching the sample was cooled by blowing room le~ el~ture air at it.
Figure 27 shows the tr~n.cmi.c.cion of this multilayer film. Curve a shows tr~ncmiccion of light polarized in the non-stretch direction at normal incidence, curve b shows tr~ncmiccinn of p-polarized light at 60~ incidence, and curve c shows tr~ncmi.ccion of light polarized in the stretch direction at normal ineidçnce.
Note the very high tr~ncmiccion of light polarized in the non-stretch direction at both normal and 60~ incidence. Average tr~n.cmiccion for curve a over 400-700 nm is 87.1%, while average tr~ncmi.c.cinn for curve b over 400-700 nm is 97.1%. Tr~ncmi.c.sion is higher for p-polarized light at 60~ incidence because the air/PEN interface has a Brewster angle near 60~, so the tr~ncmiscion at 60~
inci~ence is nearly 100%. Also note the high extinction of light polarized in the stretched direction in the visible range (400-700nm) shown by curve c, where theaverage tr~ncmi.ccion is 21.0%. The % RMS color for curve a is 1.5%. The %
RMS color for curve b is 1.4%.
EXAMPLE 8 (PEN:CoPEN. 601--High Color Polarizer) A coextruded film containing 601 layers was produced by extruding the web and two days later c)rienting the film on a different tenter than described in all the other examples. A Polyethylene Naphth~l~te (PEN) with an Tntrin.cic Viscosity of 0.5 dl/g (60 wt. % phenoll40 wt. % dichlorobenzene) was delivered WO 96/19347 . PCTIUS95/165S5 by one extruder at a rate of 75 pounds per hour and a CoPEN (70 mol~ 2,6 NDC and 30 mol% DMT) with an IV of O.SS dl/g (60 wt. % phenol/40 wt. %
dichlorobenzene) was delivered by another extruder at a rate of 65 pounds per hour. The PEN was on the skin layers. The feedblock method was used to generate lSl layers which was passed through two multipliers producing an extrudate of 601 layers. U.S. Patent 3,565,985 describes similar coextrusion mllltipliers. All sL-elchillg was done in the tenter. The film was pr~hP~t~ to about 280~F in about 20 seconds and drawn in the transverse direction to a draw ratio of about 4.4 at a rate of about 65~ per second. The film was then relaxed about 2% of its maximum width in a heat-set oven set at 460~F. The finiehed film thicknesc was 1.8 mil.
The tr~n~mi~eion of the film is shown in Figure 28. Curve a shows tr~nemi~eion of light polarized in the non-stretch direction at normal incidence, curve b shows tr~n~mi.e~ion of p-pol~ri7ed light at 60~ incidence, and curve c lS shows tr~n~mi~ion of light pol~ri7~d in the stretch direction at normal incidence.
Note the nonuniform tr~n~mi~einn of p-polarized light at both normal and 60~
incidence. The average tr~n~mi.~ion for curve a over 400-700 nm is 84.1%, while the average tr~n~miesion for curve b over 400-700 nm is 68.2%. The average tr~nemi~ion for curve c is 9.1%. The % RMS color for curve a is 1.4%, and the % RMS color for curve b is 11.2%.

EXAMPLE 9 (PET: CoPEN 449~ Polarizer) A coextruded film containing 449 layers was made by extruding the cast web in one operation and later orienting the film in a laboratory film-~L.ctching 25 a~p~tus. A Polyethylene Terephth~l~te (PET) with an Intrinsic Viscosity of 0.60 dl/g (60 wt. % phenol/40 wt. % dichlorobenzene) was delivered by one extruder at a rate of 26 pounds per hour and a CoPEN (70 mol% 2,6 NDC and 30 mol% DMT) with an intrin~ic viscosity of 0.53 (60 wt. % phenol/40 wt. %
dichlorobenzene) was delivered by another extruder at a rate of 24 pounds per 30 hour. The PET was on the skin layers. The feedblock method was used to CA 02208234 l997-06-l9 WO 96/19347 PC'r/US95116555 generate 57 layers which was passed through three multipliers producing an extrudate of 449 layers. U.S. Patent 3,565,985 describes similar coextrusion multipliers. The cast web was 7.5 mils thick and 12 inches wide. The web was later uni~xi~lly oriented using a laboratory stretching device that uses a p~nt~.~ph to grip a square section of film and stretch it in one direction while it is conctr~in~d in the other at a uniform rate. A 7.46 cm square of web was loaded into the stretcher at about 100~C and heated to 120~C in 60 seconds.
Sll~lcl~ g then commenced at 10%/sec (based on ori~in~l ~imenciQns) until the sample was stretched to about 5.0xl. TmmeAi~tely after the stretching the samplewas cooled by blowing room tel-lpel~tllre air at it. The finiched film thicknçsswas about 1.4 mil. This film had sufficient adhesion to survive the orientation process with no d~ min~tion.
Figure 29 shows the tr~ncmi.c.cion of this multilayer film. Curve a shows tr~n.cmi.ccion of light polarized in the non-stretch direction at normal incidence, curve b shows tr~n.cmi.ccion of p-polalized light at 60~ incidence, and curve c shows tr~ncmi.c.cion of light polalized in the stretch direction at normal incidence.
Note the very high tr~ncmi.Ccion of p-p~ ri7~d light at both normal and 60~
int~.itl~.nr.e. The average tr~n.cmi.ccion for curve a over 400-700 nm is 88.0%, and the average tr~ncmicci~n for curve b over 400-700 nm is 91.2%. The average tMncmi.c.ciQn for curve c over 400-700 nm is 27.9%. The % RMS color for curve a is 1.4%, and the % RMS color for curve b is 4.8%.
EXAMPLE 10 (PEN:CoPEN~ 601. Polarizer) A coextruded film con~ h-~ 601 layers was made on a sequential flat-film-making line via a coextrusion process. A Polyethylene naphth~l~te (PEN) with an intrincic viscosity of 0.54 dl/g (60 wt % Phenol plus 40 wt %
dichlorobenzene) was delivered by on extruder at a rate of 75 pounds per hour and the coPEN was delivered by another extruder at 65 pounds per hour. The coPEN was a copolymer of 70 mole % 2,6 naphthalene dicarboxylate methyl ester, 15 % dimethyl isophth~l~te and 15% dimethyl terephthalate with ethylene glycol. The feedblock method was used to generate 151 layers. The feedblock -WO 96/19347 PCTIUS9~/16555 was designed to produce a gr~tlient distribution of layers with a ration of thickn~c~ of the optical layers of 1.22 for the PEN and 1.22 for the coPEN. The PEN skin layers were coextruded on the outside of the optical stack with a totalthickn~c~ of 8% of the coextruded layers. The optical stack was mnltipli~ by two sequential multipliers. The nominal multiplication ratio of the multipliers were 1.2 and 1.27, respectively. The film was subsequently preh~ted to 310~F
in about 40 secon~iC and drawn in the transverse direction to a draw ratio of about 5.0 at a rate of 6% per second. The fini~hed film thicknPc~ was about 2 mils.
Figure 30 shows the tr~n~mi~ion for this multilayer film. Curve a shows tr~n~mi~sion of light polarized in the non-stretch direction at normal incidence, curve b shows tr~ncmi~cion of p-polarized light at 60~ incidence, and curve c shows tr~ncmi~ion of light polarized in the stretch direction at normal incidence.
Note the very high tr~nsmi~ion of p-polarized light at both normal and 60~
incidence (80-100%). Also note the very high extinction of light polarized in the stretched direction in the visible range (400-700nm) shown by curve c.
Extinction is nearly 100% between 500 and 650nm.

EXAMPLE 11 (PEN:sPS. 481. Polarizer) A 481 layer multilayer film was made from a polyethylene naphthalate (PEN) with an intrincic viscosity of 0.56 dl/g measured in 60 wt. % phenol and 40 wt % dichlorobenzene purchased from F~ctm~n Chemicals and a syndiotactic poly~Lylene (sPS) homopolymer (weight average molecular weight -- 200,000 . Daltons, sampled from l~ow Corporation). The PEN was on the outer layers and was extruded at 26 pounds per hour and the sPS at 23 pounds per hour. The feedblock used produced 61 layers with each of the 61 being alJplu~imately the same thickn~ss. After the feedblock three (2x) multipliers were used. Equal thicknes$ skin layers containing the same PEN fed to the feedblock were added ~ after the final multiplier at a total rate of 22 pounds per hour. The web was extruded through a 12" wide die to a thickness or about 0.011 inches (0.276 mm). The extrusion temperature was 290~C.

This web was stored at ambient conditions for nine days and then ~mi~xi~lly orient~d on a tenter. The film was preheated to about 320~F (160~C) in about 25 seconds and drawn in the transverse direction to a draw ratio of about 6:1 at a rate of about 28% per second. No relaxation was allowed in the S stretched direction. The finich~d film thickness was about 0.0018 inches (0.046 mm).
Figure 31 shows the optical p~lrol~l,ance of this PEN:sPS reflective polarizer co~ g 481 layers. Curve a shows tr~ncmiccion of light pol~ri7ed in the non-stretch direction at normal incidence, curve b shows tr~n.cmic.cion of 0 p-pol~ri7ed light at 60~ incidence, and curve c shows tr~n.cmi.c.cion of light pol~ri7:~ in the stretch direction at normal incidence. Note the very high tr~n.cmi.ccion of p-pol~ri7eci light at both normal and 60~ incidence. Average ~n.cmiccion for curve a over 400-700 nm is 86.2%, the average tr~ncmic.cion for curve b over 400-700 nm is 79.7%. Also note the very high extinction of light pol~ri7~A in the stretched direction in the visible range (400-700nm) shown by curve c. The film has an average tr~ncmi.ccion of 1.6~o for curve c between 400 and 700 nm. The % RMS color for curve a is 3.2%, while the % RMS color for curve b is 18.2 % .

EXAMPLE 12 (PET:Ecdel 601~ Mirror) A coextruded film co~ ining 601 layers was made on a sequential flat-film-making line via a coextrusion process. A Polyethylene terephth~l~t~
(PET) with an Tntrincic Viscosity of 0.6 dl/g (60 wt. % phenol/40 wt. %
dichlorobenzene) was delivered to the feedblock at a rate of 75 pounds per hour and Ecdel 9967 (a thermoplastic elastomer available from F~ctm~n Che.mi~
was delivered at a rate of 60 pounds per hour. The PET was on the skin layers.
The feedblock method was used to generate 151 layers which was passed through two multipliers producing an extrudate of 601 layers. The multipliers had a nominal multiplication ratio of 1.2 (next to feedblock) and 1.27. Two skin layers at a total throughput of 24 pounds per hour were added symmetrically between the last multiplier and the die. The skin layers were composed of PET
and were extruded by the same extruder supplying the PET to the feedblock.
The web was length oriented to a draw ratio of about 3.3 with the web ~l,l~r~lule at about 205~F. The film was subsequently pr~h~t~-d to about 205~F in about 35 seconds and drawn in the transverse direction to a draw ratio of about 3.3 at a rate of about 9% per second. The film was then relaxed about 3% of its maximum width in a heat-set oven set at 450~F. The fini~h~A film ~icknto~ was about 0.0027 inches.
The film provided the optical performance as shown in Figure 32.
Tr~n~mic~inn is plotted as curve a and reflectivity is plotted as curve b. The luminous reflectivity for curve b is 91.5%.

EXAMPLE 13 (PEN:CoPEN. 601~ Antireflected Polarizer~
A coextruded film containing 601 layers was made on a sequential flat-~llm-making line via a coextrusion process. A Polyethylene naphth~l~te (PEN~ with an intrin~ic viscosity of 0.54 dl/g (60 wt % Phenol plus 40 wt %
dichlorobenzene) was delivered by on extruder at a rate of 75 pounds per hour and the coPEN was delivered by another extruder at 65 pounds per hour. The coPEN was a copolymer of 70 mole ~ 2,6 naphthalene dicarboxylate methyl ester, 30% dimethyl terephth~l~te with ethylene glycol. The feedblock method was used to generate 151 layers. The PEN skin layers were coextruded on the outside of the optical stack with a total thicknes~ of 8~ of the coextruded layers.
The feedblock was desi~n~1 to make a linear gradient in layer thickness for a 149 layer optical stack with the thinnest layers on one side of the stack. The individual layer thicknP-~es were designed in pairs to make equal thickness layers of the PEN and coPEN for each pair. Each pair thickness, d, was determined by the formula d = do + do*0.003*n, where do is the minimum pair thickness, and n is the pair number between 1 and 75. The optical stack was multiplied by two sequential multipliers. The nominal multiplication ratio of the multipliers were1.2 and 1.27, respectively. The film was subsequently prelle~t~d to 320~F in WO 96tl9347 PCT/US95/16555 about 40 seconds and drawn in the transverse direction to a draw ratio of about 5.0 at a rate of 6% per second. The finished film thickness was about 2 mils.
A silical sol gel coating was then applied to one side of the reflecting polarizer film. The index of refraction of this coating was a~lo,~imately 1.35.
S Two pieces of the AR coated reflecting polarizer film were cut out and the two were l~min~ted to each other with the AR co~tingc on the outside. Tr~ncmicciQn spectra of polarized light in the crossed and parallel directions were obtained.The sample was then rinsed with a 2% solution of ammonium bifluoride (NH4 HF2) in deo~ d water to remove the AR coating. Spectra of the bare multilayer were then taken for comparison to the coated sample.
Figure 33 shows the spectra of the coated and uncoated polarizer. Curves a and b show the tr~ncmicci~,n and extinction, respectively, of the AR coated reflectin~ polarizer, and curves c and d show the tr~ncmiccion and extinction, respectively, of the uncoated reflecting polarizer. Note that the extinction spectrum is çscenti~lly unchanged, but that the trancmiccion values for the AR
coated polarizer are almost 10% higher. Peak gain was 9.9% at 565 nm, while the average gain from 425 to 700 nm was 9.1%. Peak tr~ncmiccion of the AR
coated polarizer was 97.0% at 675 nm. Average tr~ncm-ccions for curve a over 400-700 nm was 95.33%, and average tr~ncmiccion for curve d over 400-700 nm was 5.42%.

EXAMPLE 14 (PET:_cdel. 601. Polarizer) ~ A coextruded film cont~ining 601 layers was made on a sequential flat-film-making line via a coextrusion process. A polyethylene terephth~l~t~
(PET) with an Intrinsic Viscosity of 0.6 dl/g (60 wt. % phenol/40 wt. %
dichlorobenzene) was delivered to a feedblock by one extruder at a rate of 75 pounds per hour and Ecdel 9967 (a thermoplastic elastomer available from F~ctm~n Chemical) was delivered to the feedblock by another extruder at a rate of 60 pounds per hour. The PET was on the skin layers. The feedblock method was used to generate lSl layers which passed through two multipliers (2x) CA 02208234 1997-06-l9 WO 96/19347 . PCT/US95/16555 producing an extrudate of 601 layers. A side stream with a throughput of 50 pounds per hour was taken from the PET extruder and used to add two skin layers between the last multiplier and the die. The web was length oriented to adraw ratio of about 5.0 with the web temperature at about 210~F. The film was not len~ d. The fini~hP~ film thicknPss was about 2.7 mil.
Figure 34 shows the tr~ncmi~ion for this film. Curve a shows the tr~n~mi.~it)n of light pol~ri7~d in the stretch direction, while curve b shows the tr~n~mi~icn of light polarized orthogonal to the stretch direction. The average tr~n~mi~ion from 400-700 nm for curve a is 39.16% .
EXAMPLE 15 (PEN:CoPEN. 449. Polarizers) A coextruded film containing 449 layers was made by extruding the cast web in one operation dnd later orienting the film in a laboratory film-stretching a~dlus. A polyethylene naphthalate (PEN) with an Intrinsic Viscosity of 0.53 dl/g (60 wt. % phenol/40 wt. % dichlorobenzene) was delivered by one extruder at a rate of 26.7 pounds per hour to the feedblock and a different m~tPri~l was delivered by second extruder at a rate of 25 pounds per hour to thefeedblock. The PEN was the skin layers. The feedblock method was used to generate 57 layers which passed through three multipliers producing an extrudateof 449 layers. The cast web was 0.0075 mils thick and 12 inches wide. The web was later uniaxially oriented using a laboratory stretching device that uses a pantograph to grip a square section of film and stretch it in one direction at auniform rate while it is constrained in the other. A 7.46 cm square of web was loaded into the stretcher at about 100~C and heated to 140~C for 60 seconds.
Stre~c}~ing then commPnced at 10%/sec (based on original tlimpn~ions) until the sample was stretched to about 5.5xl. Immediately after stretching, the sample was cooled by blowing room temperature air at it.
The input to the second extruder was varied by blending pellets of the following poly(ethylene esters) three m~tPri~ls~ a CoPEN (70 mol%
2,6-napthalene dicarboxylate and 30 mol% terephth~l~te) with an intrin~ic viscosity of 0.52 (60 wt. % phenol/40 wt. % dichlorobenzene); (ii) the PEN, same m~t~ri~l as input to first extruder; (iii) a PET, with an intrinsic viscosity of 0.95 (60 wt. % phenol/40 wt. % dichlorobenzene). l~F 9506 purchased from Shell.
For the film shown in Figure 35A the input to the second extruder was 80-wt % of the CoPEN and 20 wt % of the PEN; for the film shown in Figure 35B the input to the second extruder was 80 wt% of the CoPEN and 20 wt % of the PET; for the film shown in Figure 35C the input to the second extruder was CoPEN.
Figures 35A, 35B, and 35C show the tr~ncmiccion of these multilayer films where curve a shows tr~ncmi.c~iQn of light polarized in the non-stretch direction at normal incidence, curve b shows tr~ncmicsion of p-polarized light pol~ri7ecl in the non-stretched direction at 60~ incidence, and culve c shows tr~ncmiccion of light pol~ri7ed in the stretch direction at normal incidence. Note that the optical response of these films is sensitive to the chemical composition of the layers from the second extruder. The average tr~ncmiccion for curve c in Figure 35A is 43.89%, the average tr~ncmiccion for curve c in Figure 35B is 21.52%, and the average tr~ncmiccion for curve c in Figure 35C is 12.48%.
Thus, extinction is increase~d from Figure 35A to Figure 35C.
For the eY~mples using the 57 layer feedblock, all layers were de-cigned for only one optical thicknçcc (1/4 of 550nm), but the extrusion equipment introduces deviations in the layer thicknesses throughout the stack reslllting in a fairly bro~-lb~nd optical response. For examples made with the 151 layer feedblock, the feedblock is designed to create a distribution of layer thicknPcces to cover a portion of the visible spectrum. Asymmetric multipliers were then used to broaden the distribution of layer thicknçsses to cover most of the visible spectrum as described in U.S. Patents 5,094,788 and 5,094,793.
Although the present invention has been described with reference to p~ led embodim~-ntc, those of skill in the art will recognize that changes may CA 02208234 l997-06-l9 be made in form and detail without departing from the spirit and scope of the invention.

Claims (29)

WE CLAIM:
1. A multilayered polymer film comprising (A) layers of a crystalline naphthalene dicarboxylic acid polyester, with a positive stress optical coefficient, having an average thickness of not more than 0.5 microns; and (B) layers of a selected second polymer having an average thickness of not more than 0.5 microns, wherein said naphthalene dicarboxylic acid polyester is more positively birefringent than said second polymer.
2. The film of Claim 1 wherein said layers of said naphthalene dicarboxylic acid polyester and said layers of said second polymer are immediately adjacent alternating layers.
3. The film of Claim 2 wherein said layers of said naphthalene dicarboxylic acid polyester and said layers of said second polymer have good interlayer adhesion.
4. The film of Claim 1 wherein there are at least 50 of each of said layers of said naphthalene dicarboxylic acid polyester and said layers of said second polymer.
5. The film of Claim 1 wherein said film has been stretched in at least one direction.
6. The film of Claim 5 wherein said film has been stretched in at least one direction to at least twice that direction's unstretched dimension.
7. The film of Claim 6 wherein said layers of said naphthalene dicarboxylic acid polyester have a higher index of refraction associated with atleast one in-plane axis than the layers of said second polymer.
8. The film of Claim 7 wherein said higher index of refraction is at least 0.05 higher.
9. The film of Claim 7 wherein said higher index of refraction is at least 0.10 higher.
10. The film of Claim 7 wherein said higher index of refraction is at least 0.20 higher.
11. The film of Claim 1 wherein said film has been stretched in at least two directions.
12. The film of Claim 1 wherein said naphthalene dicarboxylic acid polyester is a poly(ethylene naphthalate).
13. The film of Claim 1 wherein said naphthalene dicarboxylic acid polyester is a copolyester comprising naphthalate units and terephthalate units.
14. The film of Claim 1 wherein said second polymer is a polyester.
15. The film of Claim 14 wherein said second polymer comprises naphthalene units.
16. The film of Claim 14 wherein said second polymer is a copolyester comprising naphthalate units and terephthalate units.
17. The film of Claim 1 wherein said second polymer is a polystyrene.
18. The film of Claim 1 wherein said second polymer is a fluoropolymer.
19. The film of Claim 1 wherein said second polymer is a polyacrylate, polymethacrylate, or polyolefin.
20. The film of Claim 1 wherein said film has an average reflectivity, for at least one plane of polarization, of at least 50% over at least a 100 nm wide band.
21. Article comprising the film of Claim 1.
22. A method for preparing a multilayered polymer film according to claim 1 comprising (A) layers of a crystalline <-> polyester [-] having an average thickness of not more than 0.5 microns; and;
(B) layers of a selected second polymer having an average thickness of not more than 0.5 microns;
wherein said film has been stretched in at least one direction to at least twice that direction's unstretched dimension, and wherein said naphtalene dicarboxylic acid polyester is more positively birefringent than said second polymer.
23. The method of claim 22 wherein said second polymer is a polyester.
24. The method of Claim 22 wherein said layers of a polyester and said layers of a second polymer are immediately adjacent alternating layers.

< naphthalene dicarboxylic acid >
[ with a positive stress optical coefficient ]
25. The method of Claim 24 wherein said layers of a polyester and said layers of a second polymer have good interlayer adhesion.
26. The method of Claim 22 wherein there are at least 50 of each of said layers of a polyester and said layers of a second polymer.
27. The method of Claim 22 wherein said film has been stretched in at least two directions.
28. The method of Claim 22 wherein said film has an average reflectivity, for at least one plane of polarization, of at least 50% over at least a 100 nm wide band.
29. Article comprising the film obtainable according to Claim 22.
CA 2208234 1994-12-20 1995-12-19 Multilayered optical film Abandoned CA2208234A1 (en)

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Families Citing this family (1047)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5910854A (en) 1993-02-26 1999-06-08 Donnelly Corporation Electrochromic polymeric solid films, manufacturing electrochromic devices using such solid films, and processes for making such solid films and devices
US6498683B2 (en) * 1999-11-22 2002-12-24 3M Innovative Properties Company Multilayer optical bodies
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DE69629471T2 (en) * 1995-06-26 2004-06-09 Minnesota Mining And Mfg. Co., Saint Paul BACKLIGHTING DEVICE WITH MULTILAYER FILM REFLECTOR
US5699188A (en) * 1995-06-26 1997-12-16 Minnesota Mining And Manufacturing Co. Metal-coated multilayer mirror
JP4122057B2 (en) 1995-06-26 2008-07-23 スリーエム カンパニー Multilayer polymer film with additional coatings or layers
WO1997001788A1 (en) * 1995-06-26 1997-01-16 Minnesota Mining And Manufacturing Company Transflective displays with reflective polarizing transflector
US6080467A (en) 1995-06-26 2000-06-27 3M Innovative Properties Company High efficiency optical devices
US6737154B2 (en) 1995-06-26 2004-05-18 3M Innovative Properties Company Multilayer polymer film with additional coatings or layers
CA2227564C (en) * 1995-08-11 2006-04-04 Minnesota Mining And Manufacturing Company Electroluminescent lamp using multilayer optical film
US6859245B2 (en) * 1995-10-30 2005-02-22 Reveo, Inc. Multilayer reflective films having non-linear spacing of layers
AU713583B2 (en) 1996-02-29 1999-12-02 Minnesota Mining And Manufacturing Company Brightness enhancement film
US5867316A (en) * 1996-02-29 1999-02-02 Minnesota Mining And Manufacturing Company Multilayer film having a continuous and disperse phase
KR100486319B1 (en) 1996-02-29 2005-09-12 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 Optical film with joint sequence
US5968666A (en) * 1996-03-08 1999-10-19 3M Innovative Properties Company Multilayer polyester film
US20100302479A1 (en) * 1996-03-21 2010-12-02 Aronson Joseph T Optical article
US5976424A (en) * 1996-07-31 1999-11-02 Minnesota Mining And Manufacturing Company Method for making multilayer optical films having thin optical layers
US5808794A (en) * 1996-07-31 1998-09-15 Weber; Michael F. Reflective polarizers having extended red band edge for controlled off axis color
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JP3331903B2 (en) 1996-08-23 2002-10-07 セイコーエプソン株式会社 Display element and electronic device using the same
EP0867746B1 (en) 1996-09-17 2002-11-06 Seiko Epson Corporation Display and electronic apparatus using the same
KR100582861B1 (en) 1996-09-17 2006-05-25 세이코 엡슨 가부시키가이샤 Display device and electronic apparatus using the same
US6184955B1 (en) 1997-01-17 2001-02-06 Seiko Epson Corporation Liquid crystal device and electronic apparatus using it
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JP3702643B2 (en) * 1997-06-09 2005-10-05 セイコーエプソン株式会社 Display device and electronic timepiece
CN1122869C (en) 1997-06-13 2003-10-01 精工爱普生株式会社 Display and electronic device
US6141068A (en) * 1997-06-13 2000-10-31 Seiko Epson Corporation Display devices, electronic apparatus using the same, and polarized light separator
JPH1184034A (en) 1997-07-09 1999-03-26 Seiko Epson Corp Electronic timepiece
DE69831930T2 (en) 1997-07-25 2006-05-11 Seiko Epson Corp. DISPLAY AND THIS USING ELECTRONIC DEVICE
KR100505522B1 (en) 1997-07-25 2005-08-04 세이코 엡슨 가부시키가이샤 Display and electronic device equipped with the same
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US5943772A (en) 1997-08-19 1999-08-31 Brazeway, Inc. Method of cladding tubing and manufacturing condensor cores
US6326613B1 (en) 1998-01-07 2001-12-04 Donnelly Corporation Vehicle interior mirror assembly adapted for containing a rain sensor
US8294975B2 (en) 1997-08-25 2012-10-23 Donnelly Corporation Automotive rearview mirror assembly
US6172613B1 (en) 1998-02-18 2001-01-09 Donnelly Corporation Rearview mirror assembly incorporating vehicle information display
US6124886A (en) 1997-08-25 2000-09-26 Donnelly Corporation Modular rearview mirror assembly
US6798468B1 (en) 1997-09-18 2004-09-28 Seiko Epson Corporation Display device with a light-reflective polarizer and electronic apparatus employing the same
JP3460588B2 (en) * 1997-09-18 2003-10-27 セイコーエプソン株式会社 Display device and electronic device using the same
US6627300B1 (en) 1997-10-12 2003-09-30 3M Innovative Properties Company Optical device containing polymeric material domains having different degrees of randomness
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US6486997B1 (en) * 1997-10-28 2002-11-26 3M Innovative Properties Company Reflective LCD projection system using wide-angle Cartesian polarizing beam splitter
JP3614001B2 (en) 1997-12-03 2005-01-26 セイコーエプソン株式会社 Projection device
US6864861B2 (en) 1997-12-31 2005-03-08 Brillian Corporation Image generator having a miniature display device
US8288711B2 (en) 1998-01-07 2012-10-16 Donnelly Corporation Interior rearview mirror system with forwardly-viewing camera and a control
US6690268B2 (en) 2000-03-02 2004-02-10 Donnelly Corporation Video mirror systems incorporating an accessory module
US6445287B1 (en) 2000-02-28 2002-09-03 Donnelly Corporation Tire inflation assistance monitoring system
US6012820A (en) * 1998-01-13 2000-01-11 3M Innovative Properties Compnay Lighted hand-holdable novelty article
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BR9906908A (en) * 1998-01-13 2000-10-10 Minnesota Mining & Mfg Gliter particles, composite article, dispersion, dispersible combination, molding compound, and injection-moldable compositions, topical medicated cosmetics and comprising gliter.
WO1999036256A1 (en) * 1998-01-13 1999-07-22 Minnesota Mining And Manufacturing Company Gift bag accent and toppers
US6788463B2 (en) * 1998-01-13 2004-09-07 3M Innovative Properties Company Post-formable multilayer optical films and methods of forming
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KR20010034065A (en) * 1998-01-13 2001-04-25 스프레이그 로버트 월터 Visible Mirror Film Glitter
WO1999036262A2 (en) 1998-01-13 1999-07-22 Minnesota Mining And Manufacturing Company Modified copolyesters and improved multilayer reflective films
US6808658B2 (en) 1998-01-13 2004-10-26 3M Innovative Properties Company Method for making texture multilayer optical films
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WO1999042892A1 (en) 1998-02-19 1999-08-26 Massachusetts Institute Of Technology Photonic crystal omnidirectional reflector
US6477464B2 (en) 2000-03-09 2002-11-05 Donnelly Corporation Complete mirror-based global-positioning system (GPS) navigation solution
US6329925B1 (en) 1999-11-24 2001-12-11 Donnelly Corporation Rearview mirror assembly with added feature modular display
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US6256146B1 (en) 1998-07-31 2001-07-03 3M Innovative Properties Post-forming continuous/disperse phase optical bodies
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CA2346733C (en) 1998-10-14 2007-01-02 Massachusetts Institute Of Technology Omnidirectional reflective multilayer device for confining electromagnetic radiation
US6475608B2 (en) * 1998-11-16 2002-11-05 Engelhard Corporation Multi-layer iridescent films
US7002744B2 (en) * 1999-11-22 2006-02-21 Younger Mfg. Co. Dba Younger Optics Polarized optical part using high impact polyurethane-based material
US6208466B1 (en) 1998-11-25 2001-03-27 3M Innovative Properties Company Multilayer reflector with selective transmission
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JP2002535690A (en) 1999-01-14 2002-10-22 ミネソタ マイニング アンド マニュファクチャリング カンパニー Optical sheet suitable for light diffusion
JP3430062B2 (en) * 1999-02-26 2003-07-28 日産自動車株式会社 Coloring structure
US6381068B1 (en) 1999-03-19 2002-04-30 3M Innovative Properties Company Reflective projection screen and projection system
KR100452608B1 (en) * 1999-04-20 2004-10-14 다이니폰 인사츠 가부시키가이샤 Polarized light extraction optical element
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GB9913466D0 (en) 1999-06-10 1999-08-11 3M Innovative Properties Co Panel-like structure for collecting radiant energy
US8066190B2 (en) * 1999-09-07 2011-11-29 American Express Travel Related Services Company, Inc. Transaction card
US7837116B2 (en) 1999-09-07 2010-11-23 American Express Travel Related Services Company, Inc. Transaction card
US6764014B2 (en) * 1999-09-07 2004-07-20 American Express Travel Related Services Company, Inc. Transaction card
US7306158B2 (en) 2001-07-10 2007-12-11 American Express Travel Related Services Company, Inc. Clear contactless card
AU2515200A (en) 1999-09-20 2001-04-24 3M Innovative Properties Company Optical films having at least one particle-containing layer
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US6590711B1 (en) 2000-04-03 2003-07-08 3M Innovative Properties Co. Light directing construction having corrosion resistant feature
US6324002B1 (en) * 1999-10-26 2001-11-27 Agilent Technologies, Inc. Polarization-dependent imaging element
US6220703B1 (en) 1999-12-29 2001-04-24 Younger Manufacturing Co., Inc. Ophthalmic lenses utilizing polyethylene terephthalate polarizing films
WO2001038448A1 (en) 1999-11-22 2001-05-31 3M Innovative Properties Company Water-based coating composition
US6432327B2 (en) 1999-12-29 2002-08-13 Younger Mfg. Co. Formed polyethylene terephthalate polarizing film for incorporation in optical-grade plastic parts
US6511204B2 (en) 1999-12-16 2003-01-28 3M Innovative Properties Company Light tube
US6299979B1 (en) 1999-12-17 2001-10-09 Ppg Industries Ohio, Inc. Color effect coating compositions having reflective organic pigments
US6284425B1 (en) 1999-12-28 2001-09-04 3M Innovative Properties Thermal transfer donor element having a heat management underlayer
US6228555B1 (en) 1999-12-28 2001-05-08 3M Innovative Properties Company Thermal mass transfer donor element
US6759090B2 (en) * 1999-12-29 2004-07-06 Younger Mfg. Co. Method for improved adhesion of an optical coating to a polarizing film
US6811867B1 (en) 2000-02-10 2004-11-02 3M Innovative Properties Company Color stable pigmented polymeric films
US6419483B1 (en) 2000-03-01 2002-07-16 3M Innovative Properties Company Method and apparatus for curling light-curable dental materials
US7855755B2 (en) 2005-11-01 2010-12-21 Donnelly Corporation Interior rearview mirror assembly with display
US7167796B2 (en) 2000-03-09 2007-01-23 Donnelly Corporation Vehicle navigation system for use with a telematics system
US7370983B2 (en) 2000-03-02 2008-05-13 Donnelly Corporation Interior mirror assembly with display
US6893135B2 (en) * 2000-03-16 2005-05-17 3M Innovative Properties Company Light guides suitable for illuminated displays
EP1266255B1 (en) 2000-03-16 2008-11-12 Lee Products, Inc. Method of designing and manufacturing high efficiency non-imaging optics
US6590707B1 (en) * 2000-03-31 2003-07-08 3M Innovative Properties Company Birefringent reflectors using isotropic materials and form birefringence
ATE307165T1 (en) 2000-04-13 2005-11-15 3M Innovative Properties Co LIGHT STABLE ITEMS
WO2001079003A1 (en) * 2000-04-14 2001-10-25 S. C. Johnson & Son, Inc. Luminary device decorated with color changing film
US6443585B1 (en) 2000-04-25 2002-09-03 Honeywell International Inc. Hollow cavity light guide for the distribution of collimated light to a liquid crystal display
US6242152B1 (en) 2000-05-03 2001-06-05 3M Innovative Properties Thermal transfer of crosslinked materials from a donor to a receptor
WO2001084228A1 (en) 2000-05-04 2001-11-08 Koninklijke Philips Electronics N.V. Image display device and method of manufacturing a light conductor for such an image display device
JP3255638B1 (en) * 2000-06-07 2002-02-12 日本板硝子株式会社 Substrate for reflective liquid crystal display
US6797396B1 (en) 2000-06-09 2004-09-28 3M Innovative Properties Company Wrinkle resistant infrared reflecting film and non-planar laminate articles made therefrom
US7238401B1 (en) 2000-06-09 2007-07-03 3M Innovative Properties Company Glazing element and laminate for use in the same
EP1168282A1 (en) * 2000-06-20 2002-01-02 3M Innovative Properties Company Label for affixing to a garment
AU7024801A (en) 2000-06-28 2002-01-08 3M Innovative Properties Co Enhanced sample processing devices, systems and methods
JP3719374B2 (en) * 2000-07-14 2005-11-24 シャープ株式会社 Manufacturing method of polarizing element
WO2002008808A1 (en) * 2000-07-24 2002-01-31 Fusion Lighting, Inc. Multilayer plastic sheet for light pipe
TW507086B (en) 2000-07-26 2002-10-21 Shih-King Lee Polarized separating back light source module
ATE374953T1 (en) 2000-08-21 2007-10-15 3M Innovative Properties Co REFLECTIVE OPTICAL FILTERS WITH LOSS OPTIMIZATION
US6630283B1 (en) 2000-09-07 2003-10-07 3M Innovative Properties Company Photothermographic and photographic elements having a transparent support having antihalation properties and properties for reducing woodgrain
JP2004509442A (en) * 2000-09-15 2004-03-25 スリーエム イノベイティブ プロパティズ カンパニー Light extractor for optical waveguide lamp
US6767609B2 (en) * 2000-09-15 2004-07-27 3M Innovative Properties Company Perforated film constructions for backlit signs
KR100756255B1 (en) 2000-09-15 2007-09-07 쓰리엠 이노베이티브 프로퍼티즈 캄파니 Light extractor for a light guide lamp
US6673425B1 (en) * 2000-10-27 2004-01-06 3M Innovative Properties Company Method and materials for preventing warping in optical films
US6569517B1 (en) 2000-11-17 2003-05-27 3M Innovative Properties Company Color tailorable pigmented optical bodies with surface metalization
JP2002162518A (en) * 2000-11-27 2002-06-07 Teijin Ltd Near-infrared ray reflecting film for front plate of plasma display, and laminate consisting of the same
AU2002221035A1 (en) * 2000-11-27 2002-06-03 Teijin Limited Multilayered film and near-infrared-ray reflection film
JP2002160339A (en) * 2000-11-27 2002-06-04 Teijin Ltd Multi-layer laminated stretched film
US20040114371A1 (en) * 2000-12-11 2004-06-17 Lea Michael C. Luminaire comprising an elongate light source and a back reflector
US7164224B2 (en) * 2000-12-14 2007-01-16 Sharp Kabushiki Kaisha Backlight having discharge tube, reflector and heat conduction member contacting discharge tube
EP1757961A3 (en) * 2000-12-18 2007-03-07 Nippon Kayaku Kabushiki Kaisha Optical film and polyrizing film using the same, and method for improving view angle of the polarizing film
US6541591B2 (en) 2000-12-21 2003-04-01 3M Innovative Properties Company High refractive index microreplication resin from naphthyloxyalkylmethacrylates or naphthyloxyacrylates polymers
DE60143669D1 (en) 2000-12-21 2011-01-27 Light Prescriptions Innovators LIGHTING WITH RADIAL LIGHT OUTPUT STRUCTURE
US6984429B2 (en) * 2001-01-12 2006-01-10 3M Innovative Properties Company Laminate from which decorative films can be applied to a substrate
EP1352269A2 (en) * 2001-01-15 2003-10-15 3M Innovative Properties Company Multilayer infrared reflecting film with high and smooth transmission in visible wavelength region and laminate articles made therefrom
US6727313B2 (en) 2001-01-17 2004-04-27 3M Innovative Properties Company Polymeric compositions and articles with anisotropic light scattering and methods of making and using
US6819486B2 (en) * 2001-01-17 2004-11-16 3M Innovative Properties Company Projection screen having elongated structures
AU2002251807A1 (en) 2001-01-23 2002-08-19 Donnelly Corporation Improved vehicular lighting system for a mirror assembly
US7581859B2 (en) 2005-09-14 2009-09-01 Donnelly Corp. Display device for exterior rearview mirror
US7255451B2 (en) 2002-09-20 2007-08-14 Donnelly Corporation Electro-optic mirror cell
WO2002059663A1 (en) * 2001-01-25 2002-08-01 Omniguide Communications Photonic crystal optical waveguides having tailored dispersion profiles
CA2436160A1 (en) 2001-01-25 2002-08-01 Omniguide Communications Inc. Low-loss photonic crystal waveguide having large core radius
WO2002061467A2 (en) 2001-01-31 2002-08-08 Omniguide Communications Electromagnetic mode conversion in photonic crystal multimode waveguides
US6534158B2 (en) 2001-02-16 2003-03-18 3M Innovative Properties Company Color shifting film with patterned fluorescent and non-fluorescent colorants
US6506480B2 (en) 2001-02-16 2003-01-14 3M Innovative Properties Company Color shifting film with a plurality of fluorescent colorants
US6573963B2 (en) 2001-02-22 2003-06-03 3M Innovativeproperties Company Cholesteric liquid crystal optical bodies and methods of manufacture
US6917399B2 (en) 2001-02-22 2005-07-12 3M Innovative Properties Company Optical bodies containing cholesteric liquid crystal material and methods of manufacture
US6484371B1 (en) 2001-02-27 2002-11-26 3M Innovative Properties Company High strength, flexible, light weight hook and loop bundling straps
US20020163179A1 (en) * 2001-05-01 2002-11-07 Dubner Andrew D. Transparent tamper-indicating data sheet
US7052762B2 (en) * 2001-05-24 2006-05-30 3M Innovative Properties Company Low Tg multilayer optical films
US6939499B2 (en) 2001-05-31 2005-09-06 3M Innovative Properties Company Processes and apparatus for making transversely drawn films with substantially uniaxial character
US6609795B2 (en) * 2001-06-11 2003-08-26 3M Innovative Properties Company Polarizing beam splitter
US6672721B2 (en) 2001-06-11 2004-01-06 3M Innovative Properties Company Projection system having low astigmatism
US6521329B2 (en) 2001-06-18 2003-02-18 Eastman Kodak Company Radiographic phosphor panel having reflective polymeric supports
US6676859B2 (en) * 2001-09-19 2004-01-13 Gentex Corporation Substrate mounting for organic, dielectric, optical film
US6876427B2 (en) 2001-09-21 2005-04-05 3M Innovative Properties Company Cholesteric liquid crystal optical bodies and methods of manufacture and use
US20030090012A1 (en) * 2001-09-27 2003-05-15 Allen Richard Charles Methods of making polarization rotators and articles containing the polarization rotators
US6693557B2 (en) 2001-09-27 2004-02-17 Wavetronix Llc Vehicular traffic sensor
US6985291B2 (en) * 2001-10-01 2006-01-10 3M Innovative Properties Company Non-inverting transflective assembly
US20030063888A1 (en) * 2001-10-01 2003-04-03 Sahlin Jennifer J. Channeling for use with light fiber
GB0123815D0 (en) * 2001-10-03 2001-11-21 3M Innovative Properties Co Light-guide lights providing a substantially monochromatic beam
US7105225B2 (en) * 2001-10-05 2006-09-12 3M Innovative Properties Company Water contract indicator
CN100526067C (en) * 2001-11-09 2009-08-12 东丽株式会社 Glass protecting film
US20030124265A1 (en) * 2001-12-04 2003-07-03 3M Innovative Properties Company Method and materials for transferring a material onto a plasma treated surface according to a pattern
US6811848B2 (en) 2001-12-05 2004-11-02 3M Innovative Properties Company Assemblage of laminants for forming a graphic
WO2003052724A2 (en) * 2001-12-18 2003-06-26 Samsung Electronics Co., Ltd. Transmissive and reflective type liquid crystal display
KR100846628B1 (en) 2001-12-18 2008-07-16 삼성전자주식회사 Transflective type liquid crystal display device
US6611378B1 (en) 2001-12-20 2003-08-26 Semrock, Inc. Thin-film interference filter with quarter-wavelength unit sub-layers arranged in a generalized pattern
US6535667B1 (en) 2001-12-31 2003-03-18 3M Innovative Properties Company Light fiber comprising continuous outer cladding and method of making
US6799880B2 (en) 2001-12-31 2004-10-05 3M Innovative Properties Company Illumination device
US7189447B2 (en) 2002-01-04 2007-03-13 3M Innovative Properties Company Laminates
US6652996B2 (en) 2002-01-31 2003-11-25 Eastman Kodak Company Radiographic phosphor panel having improved speed and sharpness
US7203002B2 (en) * 2002-02-12 2007-04-10 Nitto Denko Corporation Polarizer, polarizing plate, liquid crystal display, and image display, and a method for producing the polarizer
CN100342265C (en) * 2002-02-28 2007-10-10 3M创新有限公司 Compound polarization beam splitters
WO2003074270A2 (en) * 2002-02-28 2003-09-12 Solutia Inc. Embossed reflective laminates
TWI281891B (en) * 2002-03-01 2007-06-01 Teijin Ltd Biaxially oriented multi-layered laminated film and method for manufacture thereof
US6900450B2 (en) 2002-03-09 2005-05-31 Kimberly-Clark Worldwide, Inc. Method and apparatus for inferring item position based on multiple data
US6885451B2 (en) 2002-03-09 2005-04-26 Kimberly-Clark Worldwide, Inc. Infrared detection of composite article components
US6927857B2 (en) 2002-03-09 2005-08-09 Kimberly-Clark Worldwide, Inc. Process for the detection of marked components of a composite article using infrared blockers
US6919965B2 (en) 2002-03-09 2005-07-19 Kimberly-Clark Worldwide, Inc. Apparatus and method for making and inspecting pre-fastened articles
US6888143B2 (en) 2002-03-09 2005-05-03 Kimberly-Clark Worldwide, Inc. Apparatus and method for inspecting pre-fastened articles
US7027158B2 (en) * 2002-03-11 2006-04-11 Therma-Wave, Inc. Beam splitter/combiner for optical meterology tool
US20050174645A1 (en) * 2002-04-23 2005-08-11 Magna Donnelly Mirrors North America Vehicle mirror having polymeric reflective film element and self-dimming element
US7139890B2 (en) * 2002-04-30 2006-11-21 Intel Corporation Methods and arrangements to interface memory
US6824868B2 (en) * 2002-04-30 2004-11-30 Solutia, Inc. Digital color-design composite for use in laminated glass
US6918674B2 (en) 2002-05-03 2005-07-19 Donnelly Corporation Vehicle rearview mirror system
US7095009B2 (en) 2002-05-21 2006-08-22 3M Innovative Properties Company Photopic detector system and filter therefor
US7396493B2 (en) * 2002-05-21 2008-07-08 3M Innovative Properties Company Multilayer optical film with melt zone to control delamination
US6991695B2 (en) * 2002-05-21 2006-01-31 3M Innovative Properties Company Method for subdividing multilayer optical film cleanly and rapidly
US20050041292A1 (en) * 2002-05-21 2005-02-24 Wheatley John A. Visible wavelength detector systems and filters therefor
US7010212B2 (en) * 2002-05-28 2006-03-07 3M Innovative Properties Company Multifunctional optical assembly
US7624783B2 (en) * 2006-07-12 2009-12-01 Sensenig Luke G Curtain system for domestic animal shelter
US7153122B2 (en) 2002-05-28 2006-12-26 3M Innovative Properties Company Apparatus for making transversely drawn films with substantially uniaxial character
US7329013B2 (en) 2002-06-06 2008-02-12 Donnelly Corporation Interior rearview mirror system with compass
WO2003105099A1 (en) 2002-06-06 2003-12-18 Donnelly Corporation Interior rearview mirror system with compass
AU2003243610A1 (en) * 2002-06-14 2003-12-31 3M Innovative Properties Company Shock indicator
US20030232210A1 (en) * 2002-06-18 2003-12-18 3M Innovative Properties Company Ink-receptive foam article
US20040005445A1 (en) * 2002-07-02 2004-01-08 Ou Yang David T. Colored multi-layer films and decorative articles made therefrom
KR100828531B1 (en) * 2002-07-26 2008-05-13 삼성전자주식회사 Liquid crystal display
US7123765B2 (en) 2002-07-31 2006-10-17 Kimberly-Clark Worldwide, Inc. Apparatus and method for inspecting articles
US6825983B2 (en) 2002-08-06 2004-11-30 Eastman Kodak Company Optical element containing an interference fringe filter
US7215473B2 (en) * 2002-08-17 2007-05-08 3M Innovative Properties Company Enhanced heat mirror films
US7274501B2 (en) 2002-09-20 2007-09-25 Donnelly Corporation Mirror reflective element assembly
US7310177B2 (en) 2002-09-20 2007-12-18 Donnelly Corporation Electro-optic reflective element assembly
US7449146B2 (en) * 2002-09-30 2008-11-11 3M Innovative Properties Company Colorimetric sensor
US20040062682A1 (en) * 2002-09-30 2004-04-01 Rakow Neal Anthony Colorimetric sensor
WO2004036658A1 (en) * 2002-10-15 2004-04-29 Sharp Kabushiki Kaisha Solar cell and solar cell module using same
US7700707B2 (en) 2002-10-15 2010-04-20 Exxonmobil Chemical Patents Inc. Polyolefin adhesive compositions and articles made therefrom
EP1558655B1 (en) 2002-10-15 2012-08-29 ExxonMobil Chemical Patents Inc. Multiple catalyst system for olefin polymerization and polymers produced therefrom
JP2006503733A (en) * 2002-10-24 2006-02-02 スリーエム イノベイティブ プロパティズ カンパニー Fabrication method of high gain optical device having continuous phase and dispersed phase
EP1418459A1 (en) * 2002-11-08 2004-05-12 3M Innovative Properties Company Optical device comprising cubo-octahedral polyhedron as light flux splitter or light diffusing element
US6908686B2 (en) * 2002-11-26 2005-06-21 Dupont Teijin Films U.S. Limited Partnership PEN-PET-PEN polymeric film
US7311956B2 (en) 2002-11-26 2007-12-25 3M Innovative Properties Company Laminate and method used for applying a design to a substrate
US6949212B2 (en) 2002-11-27 2005-09-27 3M Innovative Properties Company Methods and devices for stretching polymer films
US6936209B2 (en) 2002-11-27 2005-08-30 3M Innovative Properties Company Methods and devices for processing polymer films
MXPA05005658A (en) * 2002-12-02 2005-08-16 3M Innovative Properties Co Illumination system using a plurality of light sources.
JP3983166B2 (en) 2002-12-26 2007-09-26 日東電工株式会社 Optical element, polarization plane light source using the same, and display device using the same
US6952312B2 (en) * 2002-12-31 2005-10-04 3M Innovative Properties Company Head-up display with polarized light source and wide-angle p-polarization reflective polarizer
US7064897B2 (en) * 2002-12-31 2006-06-20 3M Innovative Properties Company Optical polarizing films with designed color shifts
US7094461B2 (en) * 2002-12-31 2006-08-22 3M Innovative Properties Company P-polarizer with large z-axis refractive index difference
US7145719B2 (en) * 2003-01-08 2006-12-05 3M Innovative Properties Company Optical cores and projection systems containing the optical core
US7236217B2 (en) * 2003-01-16 2007-06-26 3M Innovative Properties Company Package of optical films with zero-gap bond outside viewing area
US20040145312A1 (en) * 2003-01-27 2004-07-29 3M Innovative Properties Company Phosphor based light source having a flexible short pass reflector
EP1588434A2 (en) * 2003-01-27 2005-10-26 3M Innovative Properties Company Phosphor based light source component and method of making
US7091653B2 (en) 2003-01-27 2006-08-15 3M Innovative Properties Company Phosphor based light sources having a non-planar long pass reflector
US20040145289A1 (en) * 2003-01-27 2004-07-29 3M Innovative Properties Company Phosphor based light sources having a non-planar short pass reflector and method of making
US7118438B2 (en) * 2003-01-27 2006-10-10 3M Innovative Properties Company Methods of making phosphor based light sources having an interference reflector
US7245072B2 (en) * 2003-01-27 2007-07-17 3M Innovative Properties Company Phosphor based light sources having a polymeric long pass reflector
US7091661B2 (en) * 2003-01-27 2006-08-15 3M Innovative Properties Company Phosphor based light sources having a reflective polarizer
US7157839B2 (en) * 2003-01-27 2007-01-02 3M Innovative Properties Company Phosphor based light sources utilizing total internal reflection
US7312560B2 (en) * 2003-01-27 2007-12-25 3M Innovative Properties Phosphor based light sources having a non-planar long pass reflector and method of making
US7088511B2 (en) * 2003-02-12 2006-08-08 3M Innovative Properties Company Light polarizing film and method of making same
US6758565B1 (en) 2003-03-20 2004-07-06 Eastman Kodak Company Projection apparatus using telecentric optics
US7514149B2 (en) * 2003-04-04 2009-04-07 Corning Incorporated High-strength laminated sheet for optical applications
US7655296B2 (en) 2003-04-10 2010-02-02 3M Innovative Properties Company Ink-receptive foam article
US7820282B2 (en) * 2003-04-10 2010-10-26 3M Innovative Properties Company Foam security substrate
KR20040089286A (en) * 2003-04-11 2004-10-21 삼성전자주식회사 Liquid crystal display
US7927703B2 (en) * 2003-04-11 2011-04-19 3M Innovative Properties Company Adhesive blends, articles, and methods
US20040219338A1 (en) * 2003-05-01 2004-11-04 Hebrink Timothy J. Materials, configurations, and methods for reducing warpage in optical films
US7237899B2 (en) * 2003-05-16 2007-07-03 3M Innovative Properties Company Highly efficient single panel and two panel projection engines
US20040227994A1 (en) * 2003-05-16 2004-11-18 Jiaying Ma Polarizing beam splitter and projection systems using the polarizing beam splitter
US7289037B2 (en) 2003-05-19 2007-10-30 Donnelly Corporation Mirror assembly for vehicle
US6808394B1 (en) 2003-06-23 2004-10-26 American Polarizers, Inc. System for demonstrating effects of polarized lens
US6839181B1 (en) * 2003-06-25 2005-01-04 Eastman Kodak Company Display apparatus
US7632540B2 (en) 2003-07-01 2009-12-15 Transitions Optical, Inc. Alignment facilities for optical dyes
US9096014B2 (en) * 2003-07-01 2015-08-04 Transitions Optical, Inc. Oriented polymeric sheets exhibiting dichroism and articles containing the same
KR101110998B1 (en) * 2003-07-16 2012-02-17 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Optical sheet, laminates and methods of making laminates
US7011425B2 (en) * 2003-08-01 2006-03-14 S.C. Johnson & Son, Inc. Luminary product
US7413336B2 (en) * 2003-08-29 2008-08-19 3M Innovative Properties Company Adhesive stacking for multiple optical films
US7282272B2 (en) 2003-09-12 2007-10-16 3M Innovative Properties Company Polymerizable compositions comprising nanoparticles
US7074463B2 (en) * 2003-09-12 2006-07-11 3M Innovative Properties Company Durable optical element
US7289202B2 (en) * 2004-09-10 2007-10-30 3M Innovative Properties Company Methods for testing durable optical elements
US7446924B2 (en) 2003-10-02 2008-11-04 Donnelly Corporation Mirror reflective element assembly including electronic component
US7308341B2 (en) 2003-10-14 2007-12-11 Donnelly Corporation Vehicle communication system
US20050104027A1 (en) * 2003-10-17 2005-05-19 Lazarev Pavel I. Three-dimensional integrated circuit with integrated heat sinks
US7291398B2 (en) 2003-10-28 2007-11-06 E. I. Du Pont De Nemours And Company Ionomer resins as interlayers for use with imbedded or attached IR reflective or absorptive films in laminated glazing applications
US6842288B1 (en) 2003-10-30 2005-01-11 3M Innovative Properties Company Multilayer optical adhesives and articles
KR101124073B1 (en) * 2003-11-14 2012-03-20 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Water contact indicator
US7250611B2 (en) * 2003-12-02 2007-07-31 3M Innovative Properties Company LED curing apparatus and method
US7329887B2 (en) * 2003-12-02 2008-02-12 3M Innovative Properties Company Solid state light device
US7403680B2 (en) * 2003-12-02 2008-07-22 3M Innovative Properties Company Reflective light coupler
US20050116635A1 (en) * 2003-12-02 2005-06-02 Walson James E. Multiple LED source and method for assembling same
US20050116235A1 (en) * 2003-12-02 2005-06-02 Schultz John C. Illumination assembly
US7456805B2 (en) * 2003-12-18 2008-11-25 3M Innovative Properties Company Display including a solid state light device and method using same
US20050135761A1 (en) * 2003-12-23 2005-06-23 Cannon Bruce L. Optical element for uniform illumination and optical system incorporating same
US20050147838A1 (en) 2003-12-30 2005-07-07 3M Innovative Properties Company Polymerizable compositions for optical articles
US7019905B2 (en) * 2003-12-30 2006-03-28 3M Innovative Properties Company Multilayer reflector with suppression of high order reflections
US20050148735A1 (en) * 2003-12-30 2005-07-07 Olson David B. Polymerizable composition for optical articles
US7147358B2 (en) * 2003-12-31 2006-12-12 3M Innovative Properties Company Cover removal tab for optical products
US7234816B2 (en) * 2004-02-03 2007-06-26 3M Innovative Properties Company Polarizing beam splitter assembly adhesive
US8339707B2 (en) 2004-03-11 2012-12-25 Teijin Dupont Films Japan Limited Anti-reflection multi-layer laminated film
US7456915B2 (en) * 2004-03-26 2008-11-25 Nitto Denko Corporation Liquid crystal display panel with broadband interference polarizers
US7324181B2 (en) * 2004-04-15 2008-01-29 Nitto Denko Corporation Non-absorbing polarization color filter and liquid crystal display incorporating the same
CN100412663C (en) * 2004-04-15 2008-08-20 日东电工株式会社 Non-absorbing polarization color filter and liquid crystal display incorporating the same
US20050238852A1 (en) * 2004-04-23 2005-10-27 Naoki Nakayama Optical products for displays
DE102004021494B4 (en) * 2004-04-30 2006-04-06 Man Roland Druckmaschinen Ag Device for applying and removing a sleeve
JP2008500211A (en) 2004-05-22 2008-01-10 スリーエム イノベイティブ プロパティズ カンパニー Cards and laminates incorporating multilayer optical films
US7997771B2 (en) * 2004-06-01 2011-08-16 3M Innovative Properties Company LED array systems
US7213958B2 (en) * 2004-06-30 2007-05-08 3M Innovative Properties Company Phosphor based illumination system having light guide and an interference reflector
US20060002108A1 (en) 2004-06-30 2006-01-05 Ouderkirk Andrew J Phosphor based illumination system having a short pass reflector and method of making same
US7182498B2 (en) * 2004-06-30 2007-02-27 3M Innovative Properties Company Phosphor based illumination system having a plurality of light guides and an interference reflector
US7255469B2 (en) * 2004-06-30 2007-08-14 3M Innovative Properties Company Phosphor based illumination system having a light guide and an interference reflector
US7204630B2 (en) * 2004-06-30 2007-04-17 3M Innovative Properties Company Phosphor based illumination system having a plurality of light guides and an interference reflector
US7204631B2 (en) * 2004-06-30 2007-04-17 3M Innovative Properties Company Phosphor based illumination system having a plurality of light guides and an interference reflector
FR2872910B1 (en) * 2004-07-07 2006-10-13 Nanoraptor Sa OPTICAL COMPONENT FOR OBSERVING A NANOMETRIC SAMPLE, SYSTEM COMPRISING SUCH A COMPONENT, ANALYSIS METHOD USING THE SAME, AND APPLICATIONS THEREOF
US8282224B2 (en) 2004-07-12 2012-10-09 Gentex Corporation Rearview mirror assemblies with anisotropic polymer laminates
US8545030B2 (en) 2004-07-12 2013-10-01 Gentex Corporation Rearview mirror assemblies with anisotropic polymer laminates
US7502156B2 (en) * 2004-07-12 2009-03-10 Gentex Corporation Variable reflectance mirrors and windows
US7201497B2 (en) * 2004-07-15 2007-04-10 Lumination, Llc Led lighting system with reflective board
US7255920B2 (en) 2004-07-29 2007-08-14 3M Innovative Properties Company (Meth)acrylate block copolymer pressure sensitive adhesives
US20060027321A1 (en) * 2004-08-09 2006-02-09 3M Innovative Properties Company Adhesive composition
US20060029784A1 (en) * 2004-08-09 2006-02-09 3M Innovative Properties Company Laminated optical article
WO2006025548A1 (en) * 2004-08-30 2006-03-09 Teijin Dupont Films Japan Limited Optical film laminate
US7256057B2 (en) * 2004-09-11 2007-08-14 3M Innovative Properties Company Methods for producing phosphor based light sources
US20060066821A1 (en) * 2004-09-28 2006-03-30 Chunghwa Picture Tubes., Ltd. Contrast enhancement apparatus for projector
US20060065989A1 (en) * 2004-09-29 2006-03-30 Thad Druffel Lens forming systems and methods
FR2876190B1 (en) * 2004-10-04 2006-12-08 Essilor Int POLARISING OPTICAL GLASS LIGHT POLARIZING SOLID COATING COMPOSITION COMPRISING SUCH COATING, AND PROCESS FOR MANUFACTURING THE SAME.
US9649261B2 (en) 2004-10-05 2017-05-16 L'oreal Method of applying makeup to a surface and a kit for implementing such a method
FR2876011B1 (en) 2004-10-05 2006-12-29 Oreal METHOD FOR MAKE-UP A SUPPORT AND KIT FOR IMPLEMENTING SAID METHOD
CN100460950C (en) * 2004-10-07 2009-02-11 日东电工株式会社 Method of manufacturing of birefringent film and application of the film
TWI253525B (en) * 2004-10-07 2006-04-21 Au Optronics Corp Polarization optical device and liquid crystal display module utilizing the same
US7710511B2 (en) * 2004-10-15 2010-05-04 3M Innovative Properties Company Liquid crystal displays with laminated diffuser plates
US7446827B2 (en) * 2004-10-15 2008-11-04 3M Innovative Properties Company Direct-lit liquid crystal displays with laminated diffuser plates
US7345137B2 (en) * 2004-10-18 2008-03-18 3M Innovative Properties Company Modified copolyesters and optical films including modified copolyesters
US20060159888A1 (en) * 2004-10-29 2006-07-20 Hebrink Timothy J Optical films incorporating cyclic olefin copolymers
US20060091412A1 (en) * 2004-10-29 2006-05-04 Wheatley John A Polarized LED
US20060093809A1 (en) * 2004-10-29 2006-05-04 Hebrink Timothy J Optical bodies and methods for making optical bodies
WO2006049951A1 (en) * 2004-10-29 2006-05-11 3M Innovative Properties Company Optical films incorporating cyclic olefin copolymers
US7329465B2 (en) * 2004-10-29 2008-02-12 3M Innovative Properties Company Optical films incorporating cyclic olefin copolymers
US7303315B2 (en) * 2004-11-05 2007-12-04 3M Innovative Properties Company Illumination assembly using circuitized strips
US7261418B2 (en) * 2004-11-12 2007-08-28 3M Innovative Properties Company Projection apparatus
US7616332B2 (en) 2004-12-02 2009-11-10 3M Innovative Properties Company System for reading and authenticating a composite image in a sheeting
US7961393B2 (en) 2004-12-06 2011-06-14 Moxtek, Inc. Selectively absorptive wire-grid polarizer
US7570424B2 (en) 2004-12-06 2009-08-04 Moxtek, Inc. Multilayer wire-grid polarizer
US7800823B2 (en) 2004-12-06 2010-09-21 Moxtek, Inc. Polarization device to polarize and further control light
EP1825466B1 (en) * 2004-12-16 2012-02-22 RealD Inc. Compound quarter-wave retarder for optical disc pickup heads
US20060131601A1 (en) * 2004-12-21 2006-06-22 Ouderkirk Andrew J Illumination assembly and method of making same
US7285802B2 (en) * 2004-12-21 2007-10-23 3M Innovative Properties Company Illumination assembly and method of making same
US7296916B2 (en) * 2004-12-21 2007-11-20 3M Innovative Properties Company Illumination assembly and method of making same
US20060141219A1 (en) * 2004-12-23 2006-06-29 Benson Olester Jr Roll of a uniaxially oriented article having a structured surface
US20060138686A1 (en) * 2004-12-23 2006-06-29 Ouderkirk Andrew J Method of making a uniaxially stretched polymeric film having structured surface
US20060204720A1 (en) * 2004-12-23 2006-09-14 Biernath Rolf W Uniaxially oriented birefringent article having a structured surface
US20060138702A1 (en) * 2004-12-23 2006-06-29 Biernath Rolf W Method of making uniaxially oriented articles having structured surfaces
US20060141218A1 (en) * 2004-12-23 2006-06-29 Biernath Rolf W Uniaxially oriented articles having structured surface
US20060138694A1 (en) * 2004-12-23 2006-06-29 Biernath Rolf W Method of making a polymeric film having structured surfaces via replication
US20060141220A1 (en) * 2004-12-23 2006-06-29 Merrill William W Uniaxially oriented article having a structured surface
US20060138705A1 (en) * 2004-12-23 2006-06-29 Korba Gary A Method of making a structured surface article
JP5023486B2 (en) * 2004-12-28 2012-09-12 東レ株式会社 Screen reflector and screen
US7241437B2 (en) * 2004-12-30 2007-07-10 3M Innovative Properties Company Zirconia particles
US20070014018A1 (en) * 2004-12-30 2007-01-18 Wheatley John A Internal components of optical device comprising hardcoat
US7632568B2 (en) 2005-01-07 2009-12-15 3M Innovative Properties Company Solar control multilayer film
US7339635B2 (en) * 2005-01-14 2008-03-04 3M Innovative Properties Company Pre-stacked optical films with adhesive layer
US7326448B2 (en) 2005-02-17 2008-02-05 3M Innovative Properties Company Polymerizable oligomeric urethane compositions comprising nanoparticles
US7943206B2 (en) * 2005-02-17 2011-05-17 3M Innovative Properties Company Brightness enhancement film comprising polymerized organic phase having low glass transition temperature
US20060187650A1 (en) * 2005-02-24 2006-08-24 3M Innovative Properties Company Direct lit backlight with light recycling and source polarizers
US7362943B2 (en) * 2005-02-28 2008-04-22 3M Innovative Properties Company Polymeric photonic crystals with co-continuous phases
US7356229B2 (en) * 2005-02-28 2008-04-08 3M Innovative Properties Company Reflective polarizers containing polymer fibers
US20060193578A1 (en) * 2005-02-28 2006-08-31 Ouderkirk Andrew J Composite polymeric optical films with co-continuous phases
US7406239B2 (en) * 2005-02-28 2008-07-29 3M Innovative Properties Company Optical elements containing a polymer fiber weave
US7386212B2 (en) * 2005-02-28 2008-06-10 3M Innovative Properties Company Polymer photonic crystal fibers
US7356231B2 (en) * 2005-02-28 2008-04-08 3M Innovative Properties Company Composite polymer fibers
US20060196948A1 (en) * 2005-03-04 2006-09-07 Weber Michael F Light transmissive cards with suppression of UV-induced fluorescence
WO2006098899A2 (en) * 2005-03-11 2006-09-21 3M Innovative Properties Company Light management films with zirconia particles
US20060204676A1 (en) 2005-03-11 2006-09-14 Jones Clinton L Polymerizable composition comprising low molecular weight organic component
WO2006099168A2 (en) * 2005-03-11 2006-09-21 3M Innovative Properties Company Polymerizable compositions comprising nanoparticles
US20060204745A1 (en) * 2005-03-14 2006-09-14 Jones Clint L Light management films with zirconia particles
JP2008537804A (en) * 2005-03-12 2008-09-25 スリーエム イノベイティブ プロパティズ カンパニー Illumination device and manufacturing method thereof
US7316497B2 (en) * 2005-03-29 2008-01-08 3M Innovative Properties Company Fluorescent volume light source
GB2424647B (en) 2005-03-30 2009-11-04 Univ Sheffield Self-assembling block copolymer film
US7315418B2 (en) * 2005-03-31 2008-01-01 3M Innovative Properties Company Polarizing beam splitter assembly having reduced stress
US7474286B2 (en) * 2005-04-01 2009-01-06 Spudnik, Inc. Laser displays using UV-excitable phosphors emitting visible colored light
US7733310B2 (en) * 2005-04-01 2010-06-08 Prysm, Inc. Display screens having optical fluorescent materials
US7791561B2 (en) * 2005-04-01 2010-09-07 Prysm, Inc. Display systems having screens with optical fluorescent materials
US20060226583A1 (en) * 2005-04-04 2006-10-12 Marushin Patrick H Light directing film
CN101189123B (en) * 2005-04-06 2010-06-09 3M创新有限公司 Optical bodies including rough strippable boundary layers and asymmetric surface structures
US9709700B2 (en) 2005-04-06 2017-07-18 3M Innovative Properties Company Optical bodies including rough strippable boundary layers
JP2008537797A (en) * 2005-04-06 2008-09-25 スリーエム イノベイティブ プロパティズ カンパニー Optical body provided with optical film having specific functional layer
US20060227421A1 (en) 2005-04-06 2006-10-12 Stover Carl A Optical bodies including strippable boundary layers
US20060226561A1 (en) 2005-04-08 2006-10-12 3M Innovative Properties Company Heat setting optical films
US20060234040A1 (en) * 2005-04-14 2006-10-19 Liu Yaoqi J Patterned adhesives for color shifting effect
US20060234014A1 (en) * 2005-04-14 2006-10-19 Liu Yaoqi J Patterned adhesives for tamper evident feature
US7385763B2 (en) * 2005-04-18 2008-06-10 3M Innovative Properties Company Thick film multilayer reflector with tailored layer thickness profile
CN101180566A (en) * 2005-04-18 2008-05-14 3M创新有限公司 Multifunctional thick film reflective polarizer for displays
US7994702B2 (en) * 2005-04-27 2011-08-09 Prysm, Inc. Scanning beams displays based on light-emitting screens having phosphors
US8089425B2 (en) * 2006-03-03 2012-01-03 Prysm, Inc. Optical designs for scanning beam display systems using fluorescent screens
US8000005B2 (en) 2006-03-31 2011-08-16 Prysm, Inc. Multilayered fluorescent screens for scanning beam display systems
US20060257678A1 (en) * 2005-05-10 2006-11-16 Benson Olester Jr Fiber reinforced optical films
EP1883855B1 (en) 2005-05-16 2011-07-20 Donnelly Corporation Vehicle mirror assembly with indicia at reflective element
US20070030415A1 (en) * 2005-05-16 2007-02-08 Epstein Kenneth A Back-lit displays with high illumination uniformity
US7445340B2 (en) * 2005-05-19 2008-11-04 3M Innovative Properties Company Polarized, LED-based illumination source
CN101194391B (en) * 2005-05-20 2012-01-04 阿斯特里姆有限公司 Thermal control film for spacecraft
US7220036B2 (en) * 2005-05-20 2007-05-22 3M Innovative Properties Company Thin direct-lit backlight for LCD display
US7400445B2 (en) * 2005-05-31 2008-07-15 3M Innovative Properties Company Optical filters for accelerated weathering devices
US7591094B2 (en) * 2005-05-31 2009-09-22 The University Of British Columbia Perforated multi-layer optical film luminaire
US20060272766A1 (en) * 2005-06-03 2006-12-07 Hebrink Timothy J Optical bodies and method of making optical bodies including acrylate blend layers
US7557989B2 (en) * 2005-06-03 2009-07-07 3M Innovative Properties Company Reflective polarizer and display device having the same
EP1731953A1 (en) * 2005-06-07 2006-12-13 Sony Ericsson Mobile Communications AB Improved Visibility Display Device using an Index-Matching Scheme
US20060291055A1 (en) * 2005-06-15 2006-12-28 3M Innovative Properties Company Diffuse Multilayer Optical Article
US7903194B2 (en) * 2005-06-24 2011-03-08 3M Innovative Properties Company Optical element for lateral light spreading in back-lit displays and system using same
US7322731B2 (en) * 2005-06-24 2008-01-29 3M Innovative Properties Company Color mixing illumination light unit and system using same
US8023065B2 (en) * 2005-06-24 2011-09-20 3M Innovative Properties Company Optical element for lateral light spreading in edge-lit displays and system using same
US7180779B2 (en) * 2005-07-11 2007-02-20 Atmel Corporation Memory architecture with enhanced over-erase tolerant control gate scheme
US7529029B2 (en) * 2005-07-29 2009-05-05 3M Innovative Properties Company Polarizing beam splitter
US7362507B2 (en) * 2005-07-29 2008-04-22 3M Innovative Properties Company Polarizing beam splitter
US20070065636A1 (en) * 2005-08-04 2007-03-22 Merrill William W Article having a birefringent surface and microstructured features having a variable pitch or angles and process for making the article
US7418202B2 (en) * 2005-08-04 2008-08-26 3M Innovative Properties Company Article having a birefringent surface and microstructured features having a variable pitch or angles for use as a blur filter
WO2007020861A1 (en) * 2005-08-18 2007-02-22 Toray Industries, Inc. Laminate film and molded article
JP5290755B2 (en) * 2005-08-27 2013-09-18 スリーエム イノベイティブ プロパティズ カンパニー Lighting assembly and system
US7815355B2 (en) 2005-08-27 2010-10-19 3M Innovative Properties Company Direct-lit backlight having light recycling cavity with concave transflector
US7537374B2 (en) 2005-08-27 2009-05-26 3M Innovative Properties Company Edge-lit backlight having light recycling cavity with concave transflector
US20070047228A1 (en) * 2005-08-27 2007-03-01 3M Innovative Properties Company Methods of forming direct-lit backlights having light recycling cavity with concave transflector
US20070047080A1 (en) * 2005-08-31 2007-03-01 3M Innovative Properties Company Methods of producing multilayer reflective polarizer
US7445341B2 (en) * 2005-09-21 2008-11-04 3M Innovative Properties Company Four panel liquid crystal display system
US7981499B2 (en) * 2005-10-11 2011-07-19 3M Innovative Properties Company Methods of forming sheeting with a composite image that floats and sheeting with a composite image that floats
US7652736B2 (en) * 2005-10-25 2010-01-26 3M Innovative Properties Company Infrared light reflecting film
US20070097509A1 (en) * 2005-10-31 2007-05-03 Nevitt Timothy J Optical elements for high contrast applications
US8248272B2 (en) * 2005-10-31 2012-08-21 Wavetronix Detecting targets in roadway intersections
US8665113B2 (en) * 2005-10-31 2014-03-04 Wavetronix Llc Detecting roadway targets across beams including filtering computed positions
JP2009515218A (en) 2005-11-05 2009-04-09 スリーエム イノベイティブ プロパティズ カンパニー Optical film with high refractive index and antireflection coating
TWI417324B (en) 2005-11-15 2013-12-01 3M Innovative Properties Co Brightness enhancing film and method of surface treating inorganic nanoparticles
US7777832B2 (en) * 2005-11-18 2010-08-17 3M Innovative Properties Company Multi-function enhancement film
US7641350B2 (en) * 2005-11-28 2010-01-05 Jds Uniphase Corporation Front surface mirror for providing white color uniformity for polarized systems with a large range of incidence angles
WO2007064511A1 (en) * 2005-11-30 2007-06-07 3M Innovative Properties Company Energy efficient construction materials
US7924368B2 (en) * 2005-12-08 2011-04-12 3M Innovative Properties Company Diffuse multilayer optical assembly
US7686453B2 (en) * 2005-12-19 2010-03-30 3M Innovative Properties Company High contrast liquid crystal display and projection system using same
US20070139766A1 (en) * 2005-12-20 2007-06-21 Radcliffe Marc D High contrast front projection screen
US7475991B2 (en) * 2005-12-22 2009-01-13 3M Innovative Properties Company Polarizing beamsplitter assembly
US7673993B2 (en) * 2005-12-22 2010-03-09 3M Innovative Properties Company Projection system using reflective polarizers
US7540616B2 (en) * 2005-12-23 2009-06-02 3M Innovative Properties Company Polarized, multicolor LED-based illumination source
EP2860213B1 (en) 2005-12-23 2016-09-07 3M Innovative Properties Company Multilayer films including thermoplastic silicone block copolymers
CN101346649B (en) * 2005-12-23 2010-09-01 3M创新有限公司 Films including thermoplastic silicone block copolymers
US20070153402A1 (en) * 2005-12-30 2007-07-05 Destain Patrick R Fresnel lens combination
US20070153162A1 (en) * 2005-12-30 2007-07-05 Wright Robin E Reinforced reflective polarizer films
US7798678B2 (en) * 2005-12-30 2010-09-21 3M Innovative Properties Company LED with compound encapsulant lens
KR20070071346A (en) 2005-12-30 2007-07-04 쓰리엠 이노베이티브 프로퍼티즈 컴파니 An optical film composite for bright enhancement comprising a birefringent polymer layer
US20070153384A1 (en) * 2005-12-30 2007-07-05 Ouderkirk Andrew J Reinforced reflective polarizer films
US7369320B2 (en) * 2005-12-30 2008-05-06 3M Innovative Properties Company Projection system with beam homogenizer
WO2007084297A2 (en) 2006-01-12 2007-07-26 3M Innovative Properties Company Light-collimating film
US20070171325A1 (en) * 2006-01-20 2007-07-26 Byung-Soo Ko Light Management Film Package For Display Systems and Systems Using Same
US20070190284A1 (en) * 2006-02-10 2007-08-16 Freudenberg-Nok General Partnership Melt-processable adhesives for bonding pervious fluoropolymeric layers in multilayer composites
US7463417B2 (en) 2006-02-13 2008-12-09 3M Innovative Properties Company Optical articles from curable compositions
US20070191506A1 (en) * 2006-02-13 2007-08-16 3M Innovative Properties Company Curable compositions for optical articles
US8451195B2 (en) * 2006-02-15 2013-05-28 Prysm, Inc. Servo-assisted scanning beam display systems using fluorescent screens
US7884816B2 (en) * 2006-02-15 2011-02-08 Prysm, Inc. Correcting pyramidal error of polygon scanner in scanning beam display systems
US20070203267A1 (en) * 2006-02-28 2007-08-30 3M Innovative Properties Company Optical display with fluted optical plate
US7991542B2 (en) 2006-03-24 2011-08-02 Wavetronix Llc Monitoring signalized traffic flow
US20070236413A1 (en) * 2006-03-29 2007-10-11 3M Innovative Properties Company Fluted optical plate with internal light sources and systems using same
US7766531B2 (en) * 2006-03-29 2010-08-03 3M Innovative Properties Company Edge-lit optical display with fluted optical plate
US20080037127A1 (en) * 2006-03-31 2008-02-14 3M Innovative Properties Company Wide angle mirror system
US20070237938A1 (en) * 2006-03-31 2007-10-11 3M Innovative Properties Company Reinforced Optical Films
US20070231548A1 (en) * 2006-03-31 2007-10-04 Merrill William W Process for making an optical film and rolls of optical film
US20070236938A1 (en) * 2006-03-31 2007-10-11 3M Innovative Properties Company Structured Composite Optical Films
US7327923B2 (en) * 2006-03-31 2008-02-05 3M Innovative Properties Company Spiral multilayer fibers
US20070236628A1 (en) * 2006-03-31 2007-10-11 3M Innovative Properties Company Illumination Light Unit and Optical System Using Same
US8092904B2 (en) * 2006-03-31 2012-01-10 3M Innovative Properties Company Optical article having an antistatic layer
US20070228586A1 (en) * 2006-03-31 2007-10-04 Merrill William W Process for making an optical film
US20070236939A1 (en) * 2006-03-31 2007-10-11 3M Innovative Properties Company Structured Composite Optical Films
US20080274293A1 (en) * 2006-03-31 2008-11-06 3M Innovative Properties Company Spiral Multilayer Fibers
US20070242197A1 (en) * 2006-04-12 2007-10-18 3M Innovative Properties Company Transflective LC Display Having Backlight With Spatial Color Separation
US7413807B2 (en) * 2006-04-14 2008-08-19 3M Innovative Properties Company Fluoroalkyl silicone composition
US7410704B2 (en) * 2006-04-14 2008-08-12 3M Innovative Properties Company Composition containing fluoroalkyl hydrosilicone
US7407710B2 (en) * 2006-04-14 2008-08-05 3M Innovative Properties Company Composition containing fluoroalkyl silicone and hydrosilicone
WO2007124315A2 (en) * 2006-04-19 2007-11-01 3M Innovative Properties Company Transflective lc display having narrow band backlight and spectrally notched transflector
US7397604B2 (en) * 2006-04-29 2008-07-08 Curtis Ross Hruska Narrow bandpass filter assemblies for solar telescopes
US7636193B2 (en) * 2006-05-02 2009-12-22 3M Innovative Properties Company Visible light-transmissive IR filter with distorted portions
US7378848B2 (en) * 2006-05-05 2008-05-27 M2M Imaging Corp. Magnetic resonance coil system
US7317182B2 (en) * 2006-05-24 2008-01-08 3M Innovative Properties Company Backlight wedge with encapsulated light source
US7607814B2 (en) * 2006-05-24 2009-10-27 3M Innovative Properties Company Backlight with symmetric wedge shaped light guide input portion with specular reflective surfaces
US7740387B2 (en) * 2006-05-24 2010-06-22 3M Innovative Properties Company Backlight wedge with side mounted light source
US7660509B2 (en) * 2006-05-24 2010-02-09 3M Innovative Properties Company Backlight asymmetric light input wedge
US7223515B1 (en) 2006-05-30 2007-05-29 3M Innovative Properties Company Thermal mass transfer substrate films, donor elements, and methods of making and using same
US20070279755A1 (en) * 2006-06-01 2007-12-06 3M Innovative Properties Company Head-Up Display System
US20070279914A1 (en) * 2006-06-02 2007-12-06 3M Innovative Properties Company Fluorescent volume light source with reflector
US20070280622A1 (en) * 2006-06-02 2007-12-06 3M Innovative Properties Company Fluorescent light source having light recycling means
US20070281170A1 (en) * 2006-06-06 2007-12-06 3M Innovative Properties Company Infrared radiation reflecting insulated glazing unit
KR20110010147A (en) * 2006-06-08 2011-01-31 피피지 인더스트리즈 오하이오 인코포레이티드 Polarizing optical elements and articles
US7863634B2 (en) * 2006-06-12 2011-01-04 3M Innovative Properties Company LED device with re-emitting semiconductor construction and reflector
US20070285779A1 (en) * 2006-06-13 2007-12-13 Walker Christopher B Optical films comprising high refractive index and antireflective coatings
US20070285778A1 (en) * 2006-06-13 2007-12-13 Walker Christopher B Optical films comprising high refractive index and antireflective coatings
US20070298271A1 (en) * 2006-06-23 2007-12-27 3M Innovative Properties Company Multilayer optical film, method of making the same, and transaction card having the same
US7767143B2 (en) * 2006-06-27 2010-08-03 3M Innovative Properties Company Colorimetric sensors
US9134471B2 (en) 2006-06-28 2015-09-15 3M Innovative Properties Company Oriented polymeric articles and method
US20080002256A1 (en) 2006-06-30 2008-01-03 3M Innovative Properties Company Optical article including a beaded layer
US20080013051A1 (en) * 2006-07-14 2008-01-17 3M Innovative Properties Company Polarizing beam splitters incorporating reflective and absorptive polarizers and image display systems thereof
EP2040910A4 (en) * 2006-07-18 2012-03-07 3M Innovative Properties Co Calendering process for making an optical film
US20080036972A1 (en) * 2006-07-31 2008-02-14 3M Innovative Properties Company Led mosaic
US7670450B2 (en) * 2006-07-31 2010-03-02 3M Innovative Properties Company Patterning and treatment methods for organic light emitting diode devices
WO2008082703A2 (en) * 2006-07-31 2008-07-10 3M Innovative Properties Company Combination camera/projector system
US7717599B2 (en) * 2006-07-31 2010-05-18 3M Innovative Properties Company Integrating light source module
EP2050147A2 (en) * 2006-07-31 2009-04-22 3M Innovative Properties Company Led source with hollow collection lens
US8075140B2 (en) * 2006-07-31 2011-12-13 3M Innovative Properties Company LED illumination system with polarization recycling
WO2008016905A1 (en) 2006-07-31 2008-02-07 3M Innovative Properties Company Optical projection subsystem
US20080030656A1 (en) * 2006-08-01 2008-02-07 3M Innovative Properties Company Transflective lc display with internal reflector and reflective polarizer
EP2049365B1 (en) 2006-08-01 2017-12-13 3M Innovative Properties Company Illumination device
US7727633B2 (en) 2006-08-22 2010-06-01 3M Innovative Properties Company Solar control glazing laminates
US7952805B2 (en) 2006-08-22 2011-05-31 3M Innovative Properties Company Solar control film
US7905650B2 (en) 2006-08-25 2011-03-15 3M Innovative Properties Company Backlight suitable for display devices
US20080057277A1 (en) * 2006-08-30 2008-03-06 3M Innovative Properties Company Polymer fiber polarizers
US7599592B2 (en) * 2006-08-30 2009-10-06 3M Innovative Properties Company Polymer fiber polarizers with aligned fibers
US7773834B2 (en) 2006-08-30 2010-08-10 3M Innovative Properties Company Multilayer polarizing fibers and polarizers using same
US8755113B2 (en) 2006-08-31 2014-06-17 Moxtek, Inc. Durable, inorganic, absorptive, ultra-violet, grid polarizer
US8007118B2 (en) * 2006-08-31 2011-08-30 3M Innovative Properties Company Direct-lit backlight with angle-dependent birefringent diffuser
US8525402B2 (en) 2006-09-11 2013-09-03 3M Innovative Properties Company Illumination devices and methods for making the same
US7906223B2 (en) 2006-09-11 2011-03-15 3M Innovative Properties Company Permeable nanoparticle reflector
US8067110B2 (en) * 2006-09-11 2011-11-29 3M Innovative Properties Company Organic vapor sorbent protective device with thin-film indicator
US7704751B2 (en) 2006-09-18 2010-04-27 3M Innovative Properties Company Polymeric fluorescent chemical sensor
US20080068295A1 (en) * 2006-09-19 2008-03-20 Hajjar Roger A Compensation for Spatial Variation in Displayed Image in Scanning Beam Display Systems Using Light-Emitting Screens
TW200815787A (en) * 2006-09-20 2008-04-01 Ind Tech Res Inst Polarization light source
US7481563B2 (en) * 2006-09-21 2009-01-27 3M Innovative Properties Company LED backlight
US8581393B2 (en) * 2006-09-21 2013-11-12 3M Innovative Properties Company Thermally conductive LED assembly
US7857457B2 (en) * 2006-09-29 2010-12-28 3M Innovative Properties Company Fluorescent volume light source having multiple fluorescent species
JP5676104B2 (en) 2006-09-29 2015-02-25 スリーエム イノベイティブ プロパティズ カンパニー Adhesives that suppress the generation of artifacts in polymer-based optical elements
US8012550B2 (en) * 2006-10-04 2011-09-06 3M Innovative Properties Company Ink receptive article
US8003176B2 (en) * 2006-10-04 2011-08-23 3M Innovative Properties Company Ink receptive article
US20080094576A1 (en) * 2006-10-04 2008-04-24 3M Innovative Properties Company Projection system incorporating color correcting element
US20080083998A1 (en) * 2006-10-06 2008-04-10 3M Innovative Properties Company Multiple draw gap length orientation process
US20080085481A1 (en) * 2006-10-06 2008-04-10 3M Innovative Properties Company Rolls of optical film
US20080083999A1 (en) * 2006-10-06 2008-04-10 3M Innovative Properties Company Process for making an optical film
US20080085383A1 (en) * 2006-10-06 2008-04-10 3M Innovative Properties Company Processes for improved optical films
US7419757B2 (en) * 2006-10-20 2008-09-02 3M Innovative Properties Company Structured thermal transfer donors
US7963676B2 (en) * 2006-10-23 2011-06-21 Wu Kuohua Angus Reflector window for use in a light lamp
US20080101759A1 (en) * 2006-10-26 2008-05-01 K Laser Technology, Inc. Prism matrix with random phase structures
KR101361866B1 (en) * 2006-11-10 2014-02-12 엘지디스플레이 주식회사 optical film and method for fabricating the same, liquid crystal display device having the same
KR100809849B1 (en) * 2006-11-10 2008-03-04 엘지.필립스 엘시디 주식회사 Optical film and method for fabricating the same, liquid crystal display device having the same
KR101279303B1 (en) * 2006-11-10 2013-07-05 엘지디스플레이 주식회사 optical film and method for fabricating the same, liquid crystal display device having the same
US8274727B1 (en) 2006-11-13 2012-09-25 Hrl Laboratories, Llc Programmable optical label
TWI496315B (en) * 2006-11-13 2015-08-11 Cree Inc Lighting device, illuminated enclosure and lighting methods
US20080111947A1 (en) 2006-11-15 2008-05-15 3M Innovative Properties Company Back-lit displays with high illumination uniformity
CN101535880A (en) 2006-11-15 2009-09-16 3M创新有限公司 Back-lit displays with high illumination uniformity
US7766528B2 (en) * 2006-11-15 2010-08-03 3M Innovative Properties Company Back-lit displays with high illumination uniformity
US7478913B2 (en) * 2006-11-15 2009-01-20 3M Innovative Properties Back-lit displays with high illumination uniformity
US7789538B2 (en) 2006-11-15 2010-09-07 3M Innovative Properties Company Back-lit displays with high illumination uniformity
US20080124555A1 (en) 2006-11-29 2008-05-29 3M Innovative Properties Company Polymerizable composition comprising perfluoropolyether urethane having ethylene oxide repeat units
JP5211473B2 (en) * 2006-11-30 2013-06-12 凸版印刷株式会社 Laminated body, adhesive label, recording medium, and labeled article
US20080129930A1 (en) * 2006-12-01 2008-06-05 Agoura Technologies Reflective polarizer configuration for liquid crystal displays
US7800825B2 (en) * 2006-12-04 2010-09-21 3M Innovative Properties Company User interface including composite images that float
US8013506B2 (en) * 2006-12-12 2011-09-06 Prysm, Inc. Organic compounds for adjusting phosphor chromaticity
US7791687B2 (en) 2006-12-21 2010-09-07 3M Innovative Properties Company Display including reflective polarizer
US7826009B2 (en) 2006-12-21 2010-11-02 3M Innovative Properties Company Hybrid polarizer
TW200844420A (en) * 2006-12-22 2008-11-16 3M Innovative Properties Co Enhanced sample processing devices, systems and methods
EP2117713B1 (en) 2006-12-22 2019-08-07 DiaSorin S.p.A. Thermal transfer methods for microfluidic systems
US20080160321A1 (en) * 2007-01-03 2008-07-03 3M Innovative Properties Company Single pane glazing laminates
US20080187749A1 (en) * 2007-01-11 2008-08-07 Ppg Industries Ohio, Inc. Optical element having light influencing property
KR100826396B1 (en) * 2007-01-18 2008-05-02 삼성전기주식회사 Led packages
US7709092B2 (en) * 2007-01-19 2010-05-04 3M Innovative Properties Company Solar control multilayer film
US7611271B2 (en) * 2007-03-19 2009-11-03 3M Innovative Properties Company Efficient light injector
GB2460802B (en) * 2007-03-20 2012-09-05 Prysm Inc Delivering and displaying advertisment or other application data to display systems
CA2681512A1 (en) * 2007-03-20 2008-09-25 Chroma Technology Corporation Light source
US7697183B2 (en) * 2007-04-06 2010-04-13 Prysm, Inc. Post-objective scanning beam systems
US8169454B1 (en) 2007-04-06 2012-05-01 Prysm, Inc. Patterning a surface using pre-objective and post-objective raster scanning systems
US7604381B2 (en) * 2007-04-16 2009-10-20 3M Innovative Properties Company Optical article and method of making
US20080260329A1 (en) * 2007-04-20 2008-10-23 3M Innovative Properties Company Lightguides having curved light injectors
US20080260328A1 (en) * 2007-04-20 2008-10-23 3M Innovative Properties Company Led light extraction bar and injection optic for thin lightguide
US20080271739A1 (en) 2007-05-03 2008-11-06 3M Innovative Properties Company Maintenance-free respirator that has concave portions on opposing sides of mask top section
US9770611B2 (en) 2007-05-03 2017-09-26 3M Innovative Properties Company Maintenance-free anti-fog respirator
JP2010527464A (en) 2007-05-17 2010-08-12 プリズム インコーポレイテッド Multilayer screen with light-emitting stripes for beam display system scanning
US7789515B2 (en) 2007-05-17 2010-09-07 Moxtek, Inc. Projection device with a folded optical path and wire-grid polarizer
US7821713B2 (en) * 2007-05-18 2010-10-26 3M Innovative Properties Company Color light combining system for optical projector
WO2008144136A1 (en) * 2007-05-20 2008-11-27 3M Innovative Properties Company Lamp-hiding assembly for a direct lit backlight
WO2008147753A2 (en) * 2007-05-20 2008-12-04 3M Innovative Properties Company White light backlights and the like with efficient utilization of colored led sources
EP2487535A1 (en) 2007-05-20 2012-08-15 3M Innovative Properties Company Design parameters for backlights, which have a thin hollow cavity and recycle the light
CN101681053B (en) 2007-05-20 2012-03-21 3M创新有限公司 Recycling backlights with semi-specular components
EP2535766A3 (en) 2007-05-20 2013-05-01 3M Innovative Properties Company Asymmetric reflective film and backlight having a hollow cavity, which recycles the light
US9028108B2 (en) * 2007-05-20 2015-05-12 3M Innovative Properties Company Collimating light injectors for edge-lit backlights
US20080292820A1 (en) 2007-05-23 2008-11-27 3M Innovative Properties Company Light diffusing solar control film
US20080291541A1 (en) 2007-05-23 2008-11-27 3M Innovative Properties Company Light redirecting solar control film
US20080295327A1 (en) * 2007-06-01 2008-12-04 3M Innovative Properties Company Flexible circuit
FR2917615B1 (en) 2007-06-21 2009-10-02 Oreal COSMETIC COMPOSITION COMPRISING TWO POLYESTERS.
FR2917614B1 (en) 2007-06-21 2009-10-02 Oreal COSMETIC COMPOSITION COMPRISING A POLYESTER AND A BRANCHED HYDROCARBON COMPOUND.
US8556430B2 (en) 2007-06-27 2013-10-15 Prysm, Inc. Servo feedback control based on designated scanning servo beam in scanning beam display systems with light-emitting screens
US7878657B2 (en) * 2007-06-27 2011-02-01 Prysm, Inc. Servo feedback control based on invisible scanning servo beam in scanning beam display systems with light-emitting screens
JP5314013B2 (en) * 2007-07-03 2013-10-16 スリーエム イノベイティブ プロパティズ カンパニー Backlight assembly having a transmissive optical film (OPTICAL FILM)
US8459807B2 (en) 2007-07-11 2013-06-11 3M Innovative Properties Company Sheeting with composite image that floats
US8449970B2 (en) 2007-07-23 2013-05-28 3M Innovative Properties Company Antistatic article, method of making the same, and display device having the same
EP2020339B1 (en) * 2007-07-31 2012-03-28 Micronas GmbH Activation device for the safety device in a motor vehicle
US20090034268A1 (en) * 2007-08-01 2009-02-05 3M Innovative Properties Company Light management assembly
WO2009018109A1 (en) * 2007-08-02 2009-02-05 Agoura Technologies, Inc. A wire grid polarizer with combined functionality for liquid crystal displays
CA2700548C (en) * 2007-09-24 2014-08-19 Qspex Technologies, Inc. Method for manufacturing polarized ophthalmic lenses
US9335449B2 (en) * 2007-10-16 2016-05-10 3M Innovative Properties Company Higher transmission light control film
CA2704954A1 (en) 2007-11-07 2009-05-14 Certainteed Corporation Photovoltaic roofing elements and roofs using them
TWI354127B (en) * 2007-11-08 2011-12-11 Ind Tech Res Inst Optical film with low or zero birefringence and me
US9238762B2 (en) 2007-11-08 2016-01-19 3M Innovative Properties Company Optical adhesive with diffusive properties
EP2223174A4 (en) * 2007-11-27 2014-05-28 3M Innovative Properties Co Methods for forming sheeting with a composite image that floats and a master tooling
DE102007060202A1 (en) * 2007-12-14 2009-06-25 Osram Opto Semiconductors Gmbh Polarized radiation emitting semiconductor device
JP2011508904A (en) * 2007-12-20 2011-03-17 スリーエム イノベイティブ プロパティズ カンパニー Backlight reflector having prism structure
EP2235570A4 (en) * 2007-12-21 2014-10-15 3M Innovative Properties Co Light control film
JP5400061B2 (en) 2007-12-27 2014-01-29 スリーエム イノベイティブ プロパティズ カンパニー Urea pressure sensitive adhesive
US20100277796A1 (en) * 2007-12-28 2010-11-04 Simon Magarill Light combiner
CN101952765B (en) * 2007-12-28 2013-01-23 3M创新有限公司 Light combiner
CN101910919A (en) 2007-12-28 2010-12-08 3M创新有限公司 Backlight illuminating system with minute surface partial reflector and circular-mode reflective polarizer
JP5576293B2 (en) * 2008-01-08 2014-08-20 スリーエム イノベイティブ プロパティズ カンパニー Nanoparticle dispersion, composition containing the same, and article made therefrom
JP2011509338A (en) * 2008-01-11 2011-03-24 スリーエム イノベイティブ プロパティズ カンパニー Stretchable optically transparent pressure sensitive adhesive
US8820133B2 (en) * 2008-02-01 2014-09-02 Apple Inc. Co-extruded materials and methods
US9151884B2 (en) * 2008-02-01 2015-10-06 3M Innovative Properties Company Fluorescent volume light source with active chromphore
US8848132B2 (en) * 2008-02-07 2014-09-30 3M Innovative Properties Company Hollow backlight with structured films
TW200949157A (en) * 2008-02-08 2009-12-01 3M Innovative Properties Co Perforated backlight
JP2011512561A (en) * 2008-02-15 2011-04-21 スリーエム イノベイティブ プロパティズ カンパニー Brightness enhancing film and film-based diffuser for improved illumination uniformity of displays
CN101952384B (en) * 2008-02-21 2014-01-29 3M创新有限公司 Temporarily repositionable pressure sensitive adhesive blends
EP2252828A1 (en) * 2008-02-22 2010-11-24 3M Innovative Properties Company Backlights having selected output light flux distributions and display systems using same
CN102015945B (en) 2008-03-14 2017-12-15 3M创新有限公司 Stretchable stripping adhesive tape
TWI557446B (en) * 2008-03-31 2016-11-11 3M新設資產公司 Optical film
US8154418B2 (en) 2008-03-31 2012-04-10 Magna Mirrors Of America, Inc. Interior rearview mirror system
JP2011516920A (en) * 2008-03-31 2011-05-26 スリーエム イノベイティブ プロパティズ カンパニー Optimized gain low-layer reflective polarizer
US9023482B2 (en) * 2008-03-31 2015-05-05 3M Innovative Properties Company Primer layer for multilayer optical film
KR101462161B1 (en) * 2008-04-11 2014-11-14 삼성디스플레이 주식회사 Composite polarization sheet and liquid crystal display comprising the same
BRPI0907685A2 (en) 2008-04-30 2019-02-26 3M Innovative Properties Co lighting system and light injection coupler for the same
US8012571B2 (en) 2008-05-02 2011-09-06 3M Innovative Properties Company Optical film comprising birefringent naphthalate copolyester having branched or cyclic C4-C10 alkyl units
US20090283144A1 (en) * 2008-05-14 2009-11-19 3M Innovative Properties Company Solar concentrating mirror
EP2286296A4 (en) * 2008-05-15 2011-09-07 3M Innovative Properties Co Optical element and color combiner
JP5449331B2 (en) 2008-05-15 2014-03-19 スリーエム イノベイティブ プロパティズ カンパニー Optical element and color synthesizer
US8096667B2 (en) * 2008-05-16 2012-01-17 3M Innovative Properties Company Light control film with off-axis visible indicia
EP2128661A1 (en) * 2008-05-27 2009-12-02 LG Electronics Inc. Optical sheet and liquid crystal display including the same
US20090296022A1 (en) * 2008-05-28 2009-12-03 Junghoon Lee Optical sheet, backlight unit, and liquid crystal display
WO2009148818A1 (en) 2008-06-03 2009-12-10 3M Innovative Properties Company Optical films comprising phenyl ethylene (meth)acrylate monomers
US8757858B2 (en) * 2008-06-04 2014-06-24 3M Innovative Properties Company Hollow backlight with tilted light source
US20090305012A1 (en) * 2008-06-07 2009-12-10 Kevin Song Functional Optical Films with Nanostructures
US8410504B2 (en) * 2008-06-10 2013-04-02 Koninklijke Philips Electronics N.V. LED module
EP2133202A1 (en) 2008-06-11 2009-12-16 Bayer MaterialScience AG Multi-layer optical film constructions with improved characteristics and use thereof
MX2010013691A (en) * 2008-06-12 2011-03-04 Avery Dennison Corp Water detecting label.
US20110090423A1 (en) * 2008-06-13 2011-04-21 Wheatley John A Illumination device with progressive injection
JP5390604B2 (en) * 2008-06-13 2014-01-15 スリーエム イノベイティブ プロパティズ カンパニー Collimated light engine
US9254789B2 (en) 2008-07-10 2016-02-09 Gentex Corporation Rearview mirror assemblies with anisotropic polymer laminates
TW201007647A (en) 2008-07-10 2010-02-16 3M Innovative Properties Co Retroreflective articles and devices having viscoelastic lightguide
KR20160105527A (en) 2008-07-10 2016-09-06 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Viscoelastic lightguide
JP5681104B2 (en) 2008-07-10 2015-03-04 スリーエム イノベイティブ プロパティズ カンパニー Retroreflective article and device having viscoelastic lightguide
ATE551626T1 (en) * 2008-07-16 2012-04-15 3M Innovative Properties Co MULTI-LAYER OPTICAL FILM COMPRISING A MIXTURE OF METHYL METHACRYLATE POLYMER AND STYROL ACRYL NITRIL POLYMER
US7869112B2 (en) * 2008-07-25 2011-01-11 Prysm, Inc. Beam scanning based on two-dimensional polygon scanner for display and other applications
KR20170038100A (en) 2008-08-08 2017-04-05 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Lightguide having a viscoelastic layer for managing light
TWI382206B (en) * 2008-09-09 2013-01-11 Coretronic Corp Reflective film
JP2012503077A (en) * 2008-09-17 2012-02-02 スリーエム イノベイティブ プロパティズ カンパニー Optical adhesive with diffusion properties
US8870436B2 (en) * 2008-09-17 2014-10-28 3M Innovative Properties Company Patterned adhesives for reflectors
US20100075136A1 (en) * 2008-09-19 2010-03-25 Kevin Sun Song Functional Nanofilms
TW201015125A (en) * 2008-10-01 2010-04-16 Ind Tech Res Inst Optical sheet
US9487144B2 (en) 2008-10-16 2016-11-08 Magna Mirrors Of America, Inc. Interior mirror assembly with display
US7936802B2 (en) * 2008-10-21 2011-05-03 Case Western Reserve University Co-extruded multilayer polymers films for all-polymer lasers
EP2179857A1 (en) 2008-10-23 2010-04-28 Bayer MaterialScience AG ID cards with blocked laser engraving writeability
US8111463B2 (en) 2008-10-23 2012-02-07 3M Innovative Properties Company Methods of forming sheeting with composite images that float and sheeting with composite images that float
US7995278B2 (en) 2008-10-23 2011-08-09 3M Innovative Properties Company Methods of forming sheeting with composite images that float and sheeting with composite images that float
JP2012507118A (en) * 2008-10-27 2012-03-22 スリーエム イノベイティブ プロパティズ カンパニー Semi-specular hollow backlight with gradient extraction
US9046656B2 (en) * 2008-11-18 2015-06-02 3M Innovative Properties Company Isotropic layer of multilayer optical film comprising birefringent thermoplastic polymer
SG171330A1 (en) * 2008-11-19 2011-07-28 3M Innovative Properties Co High durability color combiner
KR20110086163A (en) * 2008-11-19 2011-07-27 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Polarization converting color combiner
EP2366077B1 (en) * 2008-11-19 2018-08-15 3M Innovative Properties Company Brewster angle film for light management in luminaires and other lighting systems
WO2010059566A1 (en) 2008-11-19 2010-05-27 3M Innovative Properties Company Multilayer optical film with output confinement in both polar and azimuthal directions and related constructions
US8917448B2 (en) 2008-11-19 2014-12-23 3M Innovative Properties Company Reflective film combinations with output confinement in both polar and azimuthal directions and related constructions
WO2010059579A1 (en) * 2008-11-19 2010-05-27 3M Innovative Properties Company High transmission flux leveling multilayer optical film and related constructions
CN102282502B (en) 2008-11-19 2014-07-16 3M创新有限公司 Polarization converting color combiner
TWI357481B (en) * 2008-12-05 2012-02-01 Ind Tech Res Inst A light source module for producing polarized ligh
US8472115B2 (en) * 2008-12-08 2013-06-25 Konica Minolta Opto, Inc. Anistropic dye layer, coordination polymer for anistropic dye layer and polarization element, and polarization control film, polarization control element, multi-layer polarization control element, ellipse polarization plate, light emission element, and method for controlling polarization properties employing the anistropic dye layer
EP2370841B1 (en) * 2008-12-15 2012-12-26 3M Innovative Properties Company High refractive index inorganic oxide nanoparticles comprising surface treatment and microstructured film
KR101689044B1 (en) 2008-12-22 2016-12-22 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Internally patterned multilayer optical films using spatially selective birefringence reduction
KR20140129378A (en) 2008-12-22 2014-11-06 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Microstructured optical films comprising polymerizable ultraviolet absorber
CN102239425B (en) * 2008-12-23 2014-02-26 圣戈本陶瓷及塑料股份有限公司 Scintillation separator
WO2010078418A1 (en) 2008-12-30 2010-07-08 3M Innovative Properties Company Lighting assembly
JP5676475B2 (en) * 2008-12-30 2015-02-25 スリーエム イノベイティブ プロパティズ カンパニー Fluoropolymer multilayer optical film and method for making and using the same
WO2010078424A1 (en) 2008-12-30 2010-07-08 3M Innovative Properties Company Lighting assembly
WO2010078105A1 (en) * 2008-12-30 2010-07-08 3M Innovative Properties Company Broadband reflectors, concentrated solar power systems, and methods of using the same
WO2010078316A1 (en) 2008-12-30 2010-07-08 3M Innovative Properties Company Lighting assembly
WO2010078308A1 (en) 2008-12-30 2010-07-08 3M Innovative Properties Company Lighting assembly
BRPI0923756A2 (en) 2008-12-31 2016-01-19 3M Innovative Properties Co method for producing a component of a device, and the resulting components and devices
EP2379660A1 (en) 2008-12-31 2011-10-26 3M Innovative Properties Company Stretch releasable adhesive tape
IT1392502B1 (en) * 2008-12-31 2012-03-09 St Microelectronics Srl SENSOR INCLUDING AT LEAST ONE DOUBLE-JOINT VERTICAL PHOTODIOD INTEGRATED ON A SEMICONDUCTIVE SUBSTRATE AND ITS INTEGRATION PROCESS
US20100163759A1 (en) * 2008-12-31 2010-07-01 Stmicroelectronics S.R.L. Radiation sensor with photodiodes being integrated on a semiconductor substrate and corresponding integration process
JP6120481B2 (en) * 2009-02-06 2017-04-26 スリーエム イノベイティブ プロパティズ カンパニー Light control film and multilayer optical film stack
CN202661719U (en) 2009-03-10 2013-01-09 3M创新有限公司 User interface having projected synthetic image
US8201956B2 (en) 2009-04-30 2012-06-19 3M Innovative Properties Company Task light
US8721152B2 (en) * 2009-05-01 2014-05-13 Abl Ip Holding Llc Light emitting devices and applications thereof
JP2012526894A (en) 2009-05-15 2012-11-01 スリーエム イノベイティブ プロパティズ カンパニー Urethane pressure sensitive adhesive
US8365723B2 (en) * 2009-05-22 2013-02-05 3M Innovative Properties Company Filter cartridge having cone of visibility for end-of-service-life-indicator (ESLI)
US8336543B2 (en) * 2009-05-22 2012-12-25 3M Innovative Properties Company Filter cartridge having cover for masking service life indicator
US8225782B2 (en) * 2009-05-22 2012-07-24 3M Innovative Properties Company Filter cartridge having location-registered view window for end-of-service-life-indicator (ESLI)
KR101714807B1 (en) 2009-06-18 2017-03-09 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Light control film
US8248696B2 (en) 2009-06-25 2012-08-21 Moxtek, Inc. Nano fractal diffuser
WO2011002661A1 (en) 2009-06-29 2011-01-06 3M Innovative Properties Company Lighting assembly
EP2293140A1 (en) 2009-08-01 2011-03-09 Bayer MaterialScience AG Multi-layer lighting device with improved characteristics and application thereof
CN102625677B (en) 2009-08-21 2016-05-18 3M创新有限公司 Alleviate method and the product of tissue injury with water imbibition stress distribution material
BR112012003745A2 (en) 2009-08-21 2019-09-24 3M Innovantive Properties Company fabric lighting methods and products
BR112012003749A2 (en) 2009-08-21 2020-11-03 Adolfo M. Llinas kits, product and stress distributor layer, stress distributor composite and water resistant strain distributor layer
SG178598A1 (en) 2009-08-28 2012-04-27 3M Innovative Properties Co Optical device with antistatic coating
CN102781921B (en) 2009-08-28 2015-08-12 3M创新有限公司 Comprise the composition of Polymerizable ionic liquid mixture and goods and curing
KR101783062B1 (en) 2009-08-28 2017-09-28 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Polymerizable ionic liquid comprising multifunctional cation and antistatic coatings
US8955515B2 (en) * 2009-10-23 2015-02-17 3M Innovative Properties Company Patterned chemical sensor having inert occluding layer
CN102576110B (en) * 2009-10-24 2016-02-24 3M创新有限公司 There is the immersed reflective polarizer of high off axis reflector rate
JP2013508923A (en) 2009-10-24 2013-03-07 スリーエム イノベイティブ プロパティズ カンパニー Light source and display system incorporating the light source
WO2011050233A1 (en) 2009-10-24 2011-04-28 3M Innovative Properties Company Immersed asymmetric reflector with reduced color
WO2011050226A1 (en) 2009-10-24 2011-04-28 3M Innovative Properties Company Immersed reflective polarizer with angular confinement in selected planes of incidence
GB2474903B (en) 2009-10-30 2012-02-01 Rue De Int Ltd Improvements in security devices
JP2013509619A (en) 2009-10-30 2013-03-14 スリーエム イノベイティブ プロパティズ カンパニー Optical device with antistatic properties
US20120212812A1 (en) * 2009-11-17 2012-08-23 3M Innovative Properties Company Polarization sensitive front projection screen
KR20120106953A (en) * 2009-11-18 2012-09-27 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Multi-layer optical films
GB2476228B (en) 2009-11-19 2012-02-01 Rue De Int Ltd Improvements in security devices
EP3258167A3 (en) 2009-12-08 2018-04-18 3M Innovative Properties Co. Optical constructions incorporating a light guide and low refractive index films
KR101331814B1 (en) * 2009-12-09 2013-11-22 엘지디스플레이 주식회사 Polariation sheet and lliquid crystal display device having therof
EP2513683A4 (en) 2009-12-17 2017-10-11 3M Innovative Properties Company Light redirecting constructions
KR101937605B1 (en) 2009-12-17 2019-01-10 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Light redirecting film laminate
CN102656252B (en) 2009-12-17 2015-01-14 巴斯夫欧洲公司 Liquid crystal mixtures
EP2339382A1 (en) 2009-12-22 2011-06-29 3M Innovative Properties Company A light guide for a dental light device and a method of making the light guide
RU2012131166A (en) 2009-12-22 2014-01-27 3М Инновейтив Пропертиз Компани CURABLE DENTAL COMPOSITIONS AND ARTICLES CONTAINING POLYMERIZABLE IONIC LIQUIDS
US8384851B2 (en) * 2010-01-11 2013-02-26 3M Innovative Properties Company Reflective display system with enhanced color gamut
JP5695085B2 (en) 2010-01-13 2015-04-01 スリーエム イノベイティブ プロパティズ カンパニー Lighting device with viscoelastic light guide
KR20120115568A (en) 2010-02-10 2012-10-18 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Illumination device having viscoelastic layer
BR112012022199A2 (en) 2010-03-03 2016-07-05 3M Innovative Properties Co composite multilayer structure with nanostructured surface
CN102782026A (en) 2010-03-03 2012-11-14 3M创新有限公司 Coated polarizer with nanostructured surface and method for making the same
WO2011123403A1 (en) 2010-04-02 2011-10-06 3M Innovative Properties Company Filter systems including optical analyte sensors and optical readers
US8858692B2 (en) 2010-04-02 2014-10-14 3M Innovative Properties Company Filter systems including patterned optical analyte sensors and optical readers
CN102834710A (en) 2010-04-02 2012-12-19 3M创新有限公司 Alignment registration feature for analyte sensor optical reader
MX2012012034A (en) 2010-04-16 2013-05-30 Flex Lighting Ii Llc Front illumination device comprising a film-based lightguide.
US9028123B2 (en) 2010-04-16 2015-05-12 Flex Lighting Ii, Llc Display illumination device with a film-based lightguide having stacked incident surfaces
WO2011130715A2 (en) 2010-04-16 2011-10-20 Flex Lighting Ii, Llc Illumination device comprising a film-based lightguide
JP2013526730A (en) 2010-05-21 2013-06-24 スリーエム イノベイティブ プロパティズ カンパニー Color-reducing partially reflective multilayer optical film
SG185634A1 (en) 2010-05-27 2012-12-28 3M Innovative Properties Co Method of eliminating defects while extrusion coating film using speed control of the nip roll
MX2012013699A (en) 2010-06-10 2012-12-17 3M Innovative Properties Co Display device and method of lc panel protection.
US9939560B2 (en) 2010-06-30 2018-04-10 3M Innovative Properties Company Diffuse reflective optical films with spatially selective birefringence reduction
EP2588317B1 (en) 2010-06-30 2020-03-18 3M Innovative Properties Company Multi-layer articles capable of forming color images and methods of forming color images
CA2804150C (en) 2010-06-30 2018-02-06 3M Innovative Properties Company Multi-layer articles capable of forming color images and methods of forming color images
KR101841310B1 (en) 2010-06-30 2018-03-22 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Retarder film combinations with spatially selective birefringence reduction
JP5905879B2 (en) 2010-06-30 2016-04-20 スリーエム イノベイティブ プロパティズ カンパニー Multilayer optical film
US9101956B2 (en) 2010-06-30 2015-08-11 3M Innovative Properties Company Mask processing using films with spatially selective birefringence reduction
WO2012012180A2 (en) 2010-06-30 2012-01-26 3M Innovative Properties Company Light directing film
KR101840892B1 (en) 2010-06-30 2018-03-21 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Optical stack having birefringent layer of optically symmetrical crystallites
US8696998B2 (en) 2010-07-14 2014-04-15 Green Bubble Technologies Llc Biooptical and biofunctional properties, applications and methods of polylactic acid films
WO2012012765A2 (en) 2010-07-22 2012-01-26 Green Bubble Technologies Llc Biooptical and biofunctional properties, applications and methods of polylactic acid films
WO2012015866A1 (en) 2010-07-29 2012-02-02 3M Innovative Properties Company Beam splitter module for illumination systems
GB2482552A (en) 2010-08-06 2012-02-08 Univ Sheffield Multilayer light reflective block copolymer
US8913321B2 (en) 2010-09-21 2014-12-16 Moxtek, Inc. Fine pitch grid polarizer
US8611007B2 (en) 2010-09-21 2013-12-17 Moxtek, Inc. Fine pitch wire grid polarizer
US9944822B2 (en) 2010-10-06 2018-04-17 3M Innovative Properties Company Coating composition and method of making and using the same
EP2628035A1 (en) 2010-10-11 2013-08-21 3M Innovative Properties Company Illumination device having viscoelastic lightguide
US9995861B2 (en) 2010-10-20 2018-06-12 3M Innovative Properties Company Wide band semi-specular mirror film incorporating nanovoided polymeric layer
JP6000962B2 (en) 2010-10-25 2016-10-05 コベストロ、ドイチュラント、アクチエンゲゼルシャフトCovestro Deutschland Ag Plastic multilayer structure with low energy transmission
KR20120061556A (en) * 2010-12-03 2012-06-13 삼성전자주식회사 Display panel module and multi-panel display device including the same
TW201232125A (en) 2010-12-04 2012-08-01 3M Innovative Properties Co Illumination assembly and method of forming same
US20130250614A1 (en) 2010-12-04 2013-09-26 3M Innovative Properties Company Illumination assembly and method of forming same
WO2012078543A2 (en) 2010-12-10 2012-06-14 3M Innovative Properties Company Glare reducing glazing articles
JP2014501465A (en) 2010-12-16 2014-01-20 スリーエム イノベイティブ プロパティズ カンパニー Transparent micropatterned RFID antenna and article including the same
WO2012082706A2 (en) 2010-12-16 2012-06-21 3M Innovative Properties Company Methods for preparing optically clear adhesives and coatings
US8742022B2 (en) 2010-12-20 2014-06-03 3M Innovative Properties Company Coating compositions comprising non-ionic surfactant exhibiting reduced fingerprint visibility
US9296904B2 (en) 2010-12-20 2016-03-29 3M Innovative Properties Company Coating compositions comprising non-ionic surfactant exhibiting reduced fingerprint visibility
EP2654708A4 (en) 2010-12-22 2015-08-05 Avon Prod Inc Cosmetic films
CN103299422B (en) 2010-12-29 2016-11-02 3M创新有限公司 There is the long-distance fluorescent powder LED matrix of Broadband emission and controllable color
MY164263A (en) 2010-12-29 2017-11-30 3M Innovative Properties Co Phosphor refletor assembly for remote phosphor led device
JP6104174B2 (en) 2010-12-29 2017-03-29 スリーエム イノベイティブ プロパティズ カンパニー Remote phosphor LED structure
US9151463B2 (en) 2010-12-29 2015-10-06 3M Innovative Properties Company LED color combiner
US8854730B2 (en) 2010-12-30 2014-10-07 3M Innovative Properties Company Negatively birefringent polyesters and optical films
JP6392514B2 (en) 2010-12-30 2018-09-19 スリーエム イノベイティブ プロパティズ カンパニー Laser cutting method and article produced thereby
PL2658674T3 (en) 2010-12-30 2017-08-31 3M Innovative Properties Co Apparatus for laser converting using a support member having a gold facing layer; method of laser converting a sheet material using such apparatus
CN102588895B (en) * 2011-01-13 2014-07-30 宏腾光电股份有限公司 Light equalizing anti-dazzling structure and light emitting device
EP2666039B1 (en) 2011-01-18 2017-06-07 3M Innovative Properties Company Optical film stack
US9239476B2 (en) 2011-01-28 2016-01-19 Merck Patent Gmbh Layer arrangement for the regulation of light transmission
KR101943671B1 (en) 2011-03-14 2019-01-29 쓰리엠 이노베이티브 프로퍼티즈 캄파니 Nanostructured articles
US20140004304A1 (en) 2011-03-14 2014-01-02 3M Innovative Properties Company Multilayer nanostructured articles
GB201104565D0 (en) * 2011-03-17 2011-05-04 Dupont Teijin Films Us Ltd Polyester films
EP2691798B1 (en) 2011-03-30 2018-04-25 3M Innovative Properties Company Hybrid light redirecting and light diffusing constructions
US9353930B2 (en) 2011-04-08 2016-05-31 3M Innovative Properties Company Light duct tee extractor
CN103534934B (en) 2011-05-09 2016-09-14 3M创新有限公司 There are the architectonics goods of photovoltaic cell and visible transmission reflector
WO2012158414A1 (en) 2011-05-13 2012-11-22 3M Innovative Properties Company Back-lit transmissive display having variable index light extraction layer
EP3795619A1 (en) 2011-05-13 2021-03-24 3M Innovative Properties Co. Benzyl (meth)acrylate monomers suitable for microstructured optical films
US8873144B2 (en) 2011-05-17 2014-10-28 Moxtek, Inc. Wire grid polarizer with multiple functionality sections
US8913320B2 (en) 2011-05-17 2014-12-16 Moxtek, Inc. Wire grid polarizer with bordered sections
CN102887114B (en) * 2011-07-18 2015-02-04 宏腾光电股份有限公司 Vehicle display mirror and manufacturing method of vehicle display mirror
CN103688196B (en) 2011-07-19 2017-09-05 3M创新有限公司 Two-sided day light-redirecting film
GB2493369B (en) 2011-08-02 2013-09-25 Rue De Int Ltd Improvements in security devices
CN103718087B (en) 2011-08-08 2018-01-02 默克专利股份有限公司 For adjusting light transmissive layer arrangement
EP2944671A1 (en) 2011-08-17 2015-11-18 3M Innovative Properties Company of 3M Center Nanostructured articles and methods to make the same
CN103748503B (en) * 2011-08-19 2017-07-11 3M创新有限公司 projection subsystem
US9334345B2 (en) 2011-09-08 2016-05-10 Ppg Industries Ohio, Inc. Polymerizable compositions containing (meth)acrylate monomers having sulfide linkages
CN103035828A (en) * 2011-09-30 2013-04-10 展晶科技(深圳)有限公司 Light-emitting diode (LED) packaging structure
EP2766656A4 (en) 2011-10-14 2015-06-17 3M Innovative Properties Co Lens assembly for remote phosphor led device
KR102047286B1 (en) 2011-10-20 2019-11-21 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Illumination systems with sloped transmission spectrum front reflector
CN103890620B (en) 2011-10-20 2017-05-17 3M创新有限公司 Apodized broadband partial reflectors having differing optical packets
CN103907035B (en) 2011-10-20 2017-07-04 3M创新有限公司 apodization broadband partial reflector
TW201327014A (en) 2011-10-24 2013-07-01 3M Innovative Properties Co Tilted dichroic polarized color combiner
JP6085143B2 (en) * 2011-11-11 2017-02-22 住友化学株式会社 Optical film
JP6161622B2 (en) 2011-11-28 2017-07-12 スリーエム イノベイティブ プロパティズ カンパニー Polarizing beam splitter providing high resolution images and system utilizing such beam splitter
CN105164574B (en) 2011-11-28 2019-06-21 3M创新有限公司 Preparation provides the method for the polarization beam apparatus and the system using such beam splitter of high-definition picture
KR101975625B1 (en) 2011-11-29 2019-05-07 데이진 필름 솔루션스 가부시키가이샤 Biaxially stretched laminated polyester film, infrared-ray-shielding structure for laminated glass which comprises said film, and laminated glass comprising said film or said structure
WO2013096169A1 (en) 2011-12-22 2013-06-27 3M Innovative Properties Company Optical device with sensor and method of making and using same
KR102038341B1 (en) 2011-12-29 2019-10-30 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Cleanable articles and methods for making and using same
US9081147B2 (en) 2012-01-03 2015-07-14 3M Innovative Properties Company Effective media retarder films with spatially selective birefringence reduction
CN104144780B (en) 2012-01-31 2016-10-19 3M创新有限公司 For the method sealing the edge of multi-layer product
SG11201404488UA (en) 2012-02-01 2014-08-28 3M Innovative Properties Co Nanostructured materials and methods of making the same
CA2863403A1 (en) 2012-02-03 2013-08-08 Bert T. Chien Primer compositions for optical films
TWI596385B (en) * 2012-02-13 2017-08-21 東麗股份有限公司 Reflective film
US9128307B2 (en) 2012-02-20 2015-09-08 Pleotint, L.L.C. Enhanced thermochromic window which incorporates a film with multiple layers of alternating refractive index
US8922890B2 (en) 2012-03-21 2014-12-30 Moxtek, Inc. Polarizer edge rib modification
WO2013148031A1 (en) 2012-03-26 2013-10-03 3M Innovative Properties Company Nanostructured material and method of making the same
US20150056412A1 (en) 2012-03-26 2015-02-26 3M Innovative Properties Company Article and method of making the same
JP6545097B2 (en) 2012-03-30 2019-07-17 スリーエム イノベイティブ プロパティズ カンパニー Urea based and urethane based pressure sensitive adhesive blends
WO2013162939A2 (en) 2012-04-25 2013-10-31 3M Innovative Properties Company Two imager projection device
US11133118B2 (en) 2012-05-22 2021-09-28 University Of Massachusetts Patterned nanoparticle structures
EP2855144B1 (en) 2012-06-01 2017-06-21 Covestro Deutschland AG Multilayer structure as reflector
US10077886B2 (en) 2012-06-01 2018-09-18 3M Innovative Properties Company Hybrid light bulbs using combinations of remote phosphor LEDS and direct emitting LEDS
JP6218820B2 (en) 2012-06-19 2017-10-25 スリーエム イノベイティブ プロパティズ カンパニー Coating composition comprising a polymerizable nonionic surfactant exhibiting low fingerprint visibility
WO2013191861A1 (en) 2012-06-19 2013-12-27 3M Innovative Properties Company Additive comprising low surface energy group and hydroxyl groups and coating compositions
CN104411791B (en) 2012-07-03 2017-06-09 3M创新有限公司 Heat-activatable silicone-based adhesive
CN104428261B (en) 2012-07-13 2018-09-11 康宁股份有限公司 The method and apparatus for preparing laminated glass piece
KR20150038203A (en) 2012-07-26 2015-04-08 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Heat de-bondable adhesive articles
KR102058512B1 (en) 2012-07-26 2019-12-23 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Heat de-bondable optical articles
US9851576B2 (en) 2012-08-15 2017-12-26 3M Innovative Properties Company Polarizing beam splitter plates providing high resolution images and systems utilizing such polarizing beam splitter plates
JP6576242B2 (en) 2012-08-21 2019-09-18 スリーエム イノベイティブ プロパティズ カンパニー Visual equipment
EP2888108A1 (en) 2012-08-21 2015-07-01 3M Innovative Properties Company Articles with binder-deficient slip coating and method for making same
EP3037868A1 (en) 2012-08-22 2016-06-29 3M Innovative Properties Company Polarizing beam splitter
US20140065397A1 (en) 2012-08-28 2014-03-06 3M Innovative Properties Company Coextruded polymer film configured for successive irreversible delamination
EP2896078A4 (en) 2012-09-13 2016-05-25 3M Innovative Properties Co Efficient lighting system with wide color range
KR20150129057A (en) 2012-09-20 2015-11-18 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Microstructured film comprising nanoparticles and monomer comprising alkylene oxide repeat units
EP2926389B1 (en) 2012-11-30 2021-03-17 3M Innovative Properties Company Emissive display with reflective polarizer
US9761843B2 (en) 2012-11-30 2017-09-12 3M Innovative Properties Company Emissive display with hybrid polarizer
TW201435830A (en) 2012-12-11 2014-09-16 3M Innovative Properties Co Inconspicuous optical tags and methods therefor
US9829604B2 (en) 2012-12-20 2017-11-28 3M Innovative Properties Company Method of making multilayer optical film comprising layer-by-layer self-assembled layers and articles
US10539717B2 (en) * 2012-12-20 2020-01-21 Samsung Sdi Co., Ltd. Polarizing plates and optical display apparatuses including the polarizing plates
US9958699B2 (en) 2012-12-21 2018-05-01 3M Innovative Properties Company Hybrid polarizing beam splitter
EP2938689B1 (en) 2012-12-28 2018-07-11 3M Innovative Properties Company Optically clear hot melt processable high refractive index adhesives
CN104919342B (en) * 2013-01-14 2017-11-14 3M创新有限公司 Strengthen the optical filter of the chromatic discrimination power of color defect individual
CN104981719B (en) 2013-02-08 2019-01-18 3M创新有限公司 Integral type quantum dot optical configuration
US10838127B2 (en) 2013-02-20 2020-11-17 3M Innovative Properties Company Absorbing, reflecting and collimating polarizer stack and backlights incorporating same
US10406845B2 (en) 2013-03-15 2019-09-10 Gemalto Sa Flexible hinge material comprising cross-linked polyurethane material
US20140265301A1 (en) 2013-03-15 2014-09-18 3M Innovative Properties Company Security feature utlizing hinge material and biodata page
US9279921B2 (en) 2013-04-19 2016-03-08 3M Innovative Properties Company Multilayer stack with overlapping harmonics for wide visible-infrared coverage
US10348239B2 (en) 2013-05-02 2019-07-09 3M Innovative Properties Company Multi-layered solar cell device
EP3004261A1 (en) 2013-05-31 2016-04-13 3M Innovative Properties Company Methods of layer by layer self-assembly of a polyelectrolyte comprising light absorbing or stabilizing compound and articles
EP3004726B1 (en) 2013-05-31 2022-05-04 3M Innovative Properties Company Daylight redirecting glazing laminates
EP3005438B1 (en) 2013-06-06 2019-05-08 3M Innovative Properties Company Antireflective oled construction
EP3003704B1 (en) 2013-06-06 2020-09-02 3M Innovative Properties Company Method for preparing structured adhesive articles
EP3004273B1 (en) 2013-06-06 2021-11-03 3M Innovative Properties Company Method for preparing structured adhesive articles
CN105307805B (en) 2013-06-06 2018-05-15 3M创新有限公司 The method of preparation structure laminating adhesive articles
US10263132B2 (en) 2013-07-01 2019-04-16 3M Innovative Properties Company Solar energy devices
USD746974S1 (en) 2013-07-15 2016-01-05 3M Innovative Properties Company Exhalation valve flap
EP3021950B1 (en) 2013-07-15 2023-08-30 3M Innovative Properties Company Respirator having optically active exhalation valve
JP6087872B2 (en) * 2013-08-12 2017-03-01 富士フイルム株式会社 Optical film, barrier film, light conversion member, backlight unit, and liquid crystal display device
US9864120B2 (en) 2013-09-05 2018-01-09 3M Innovative Properties Company Patterned marking of multilayer optical film by thermal conduction
SG11201601709WA (en) 2013-09-06 2016-04-28 3M Innovative Properties Co Multilayer optical film
US10185068B2 (en) 2013-09-06 2019-01-22 3M Innovative Properties Company Multilayer reflective polarizer
US20150077873A1 (en) 2013-09-16 2015-03-19 3M Innovative Properties Company Adhesive articles containing light shielding film substrates, method of making thereof and articles therefrom
WO2015048624A1 (en) 2013-09-30 2015-04-02 3M Innovative Properties Company Polymeric multilayer optical film
US9632223B2 (en) 2013-10-24 2017-04-25 Moxtek, Inc. Wire grid polarizer with side region
EP3072000A1 (en) 2013-11-19 2016-09-28 3M Innovative Properties Company Multilayer polymeric reflector
CN105765425B (en) 2013-11-25 2019-03-15 3M创新有限公司 Optical film stack including retardation layer
US9885885B2 (en) 2013-11-27 2018-02-06 3M Innovative Properties Company Blue edge filter optical lens
WO2015095317A1 (en) 2013-12-19 2015-06-25 3M Innovative Properties Company Articles comprising self-assembled layers comprising nanoparticles with a phosphorous surface treatment
US11156756B2 (en) 2013-12-30 2021-10-26 3M Innovative Properties Company Optical film including collimating reflective polarizer
US9841598B2 (en) 2013-12-31 2017-12-12 3M Innovative Properties Company Lens with embedded multilayer optical film for near-eye display systems
US10161593B2 (en) 2014-02-25 2018-12-25 3M Innovative Properties Company Solid state lighting device with virtual filament(s)
EP3114521A1 (en) 2014-03-07 2017-01-11 3M Innovative Properties Company Light source incorporating multilayer optical film
WO2015142864A1 (en) 2014-03-18 2015-09-24 3M Innovative Properties Company Marketing strip with viscoelastic lightguide
US9739916B2 (en) 2014-03-20 2017-08-22 3M Innovative Properties Company Circadian rhythm optical film
CN106164746A (en) 2014-04-09 2016-11-23 3M创新有限公司 The near-eye display system with thin film as combiner
FR3021247B1 (en) 2014-05-21 2017-01-27 Essilor Int METHOD OF MANUFACTURING AN OPHTHALMIC LENS AND THAT LENS
FR3021248B1 (en) 2014-05-21 2016-06-03 Essilor Int METHOD FOR MANUFACTURING AN OPHTHALMIC LENS
CN106463591A (en) 2014-06-02 2017-02-22 3M创新有限公司 LED with remote phosphor and shell reflector
US9919339B2 (en) 2014-06-18 2018-03-20 3M Innovation Properties Company Optical film
EP3180650A4 (en) * 2014-08-13 2018-08-08 3M Innovative Properties Company Head-mounted display system and components
CN107075315B (en) 2014-09-05 2021-12-17 3M创新有限公司 Heat conformable curable adhesive films
KR20160043280A (en) * 2014-10-13 2016-04-21 삼성전자주식회사 Polarizer film, display apparatus including the same, and manufacturing method for the same
US9823395B2 (en) 2014-10-17 2017-11-21 3M Innovative Properties Company Multilayer optical film having overlapping harmonics
KR20170074934A (en) 2014-10-20 2017-06-30 쓰리엠 이노베이티브 프로퍼티즈 캄파니 Sun-facing light redirecting films with reduced glare
KR20170071582A (en) 2014-10-20 2017-06-23 쓰리엠 이노베이티브 프로퍼티즈 캄파니 Room-facing light redirecting films with reduced glare
US10598349B2 (en) 2014-11-07 2020-03-24 3M Innovative Properties Company Lighting component including switchable diffuser
CN107107457B (en) 2014-12-22 2019-08-13 3M创新有限公司 For stretching and taking away the device and method of polymer film
KR102444532B1 (en) 2014-12-23 2022-09-16 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Double Sided Multilayer Adhesive
WO2016106022A1 (en) 2014-12-23 2016-06-30 3M Innovative Properties Company Tie layers prepared from particle-containing waterborne suspensions
JP6738829B2 (en) 2014-12-30 2020-08-12 スリーエム イノベイティブ プロパティズ カンパニー3M Innovative Properties Company Optical laminate including reflective polarizer and compensation film
KR20170100637A (en) 2014-12-31 2017-09-04 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Small projection systems and related components
CN107407758A (en) 2015-02-27 2017-11-28 3M创新有限公司 Optical film including collimated reflected polarizer and structured layer
KR20170122789A (en) 2015-03-05 2017-11-06 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Optical system with switchable diffuser
US10001587B2 (en) 2015-03-27 2018-06-19 3M Innovative Properties Company Brightness enhancement film
WO2016160252A1 (en) 2015-03-30 2016-10-06 3M Innovative Properties Company Microstructured optical film comprising low refractive index layer disposed on base film substrate
US10036125B2 (en) 2015-05-11 2018-07-31 Nanotech Security Corp. Security device
GB201508114D0 (en) 2015-05-12 2015-06-24 3M Innovative Properties Co Respirator tab
WO2016179666A1 (en) * 2015-05-13 2016-11-17 Landoa Pty Ltd Shark deterrent
JP6927886B2 (en) * 2015-05-26 2021-09-01 ロリク アーゲーRolic Ag Optical security device
US11061233B2 (en) 2015-06-30 2021-07-13 3M Innovative Properties Company Polarizing beam splitter and illuminator including same
CN107850703B (en) 2015-07-24 2021-07-27 3M创新有限公司 Reflective stack with heat sink layer
WO2017027215A1 (en) 2015-08-07 2017-02-16 3M Innovative Properties Company Light guide assemblies
CN107924013B (en) 2015-08-21 2019-08-16 3M创新有限公司 Optical film with optical axis and the system and method for handling optical film
WO2017039717A1 (en) 2015-09-03 2017-03-09 3M Innovative Properties Company Method of making optical films and stacks
JP6829969B2 (en) 2015-09-28 2021-02-17 日東電工株式会社 An optical member, a set of polarizing plates using the optical member, and a liquid crystal display device.
CN108139613B (en) 2015-10-02 2020-08-18 3M创新有限公司 Optical filter
KR102497784B1 (en) 2015-10-06 2023-02-09 삼성디스플레이 주식회사 Display device
JP7010450B2 (en) 2015-11-16 2022-01-26 スリーエム イノベイティブ プロパティズ カンパニー Display laminate with single packet 2-axis birefringence reflective modulator
US10514487B2 (en) 2015-12-17 2019-12-24 3M Innovative Properties Company Light guides
KR20180086507A (en) 2015-12-18 2018-07-31 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Broadband visible reflector
CN108472624B (en) 2015-12-18 2022-03-18 3M创新有限公司 Metal-containing adsorbents for nitrogen-containing compounds
WO2017112450A1 (en) 2015-12-22 2017-06-29 3M Innovative Properties Company Internally incorporated phenolic resins in water-based (meth)acrylate adhesive compositions, pre-adhesive reaction mixtures, methods, and articles
WO2017112386A1 (en) 2015-12-22 2017-06-29 3M Innovative Properties Company Packaged pre-adhesive composition including a polylactic acid-containing packaging material, adhesives, and articles
US10191305B2 (en) * 2015-12-30 2019-01-29 Signet Armorlite, Inc. Ophthalmic lens
WO2017117090A1 (en) 2015-12-30 2017-07-06 3M Innovative Properties Company Pressure sensitive adhesives containing active enzymes
JP6934703B2 (en) 2016-02-03 2021-09-15 スリーエム イノベイティブ プロパティズ カンパニー Display device and infrared light cut film
KR20180115728A (en) 2016-02-24 2018-10-23 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Modification of Siloxane Polyoxamide Copolymer Using Ultraviolet Light
US10734463B2 (en) 2016-03-15 2020-08-04 Apple Inc. Color-insensitive window coatings for ambient light sensors
WO2017157136A1 (en) * 2016-03-17 2017-09-21 异视科技(北京)有限公司 Display imaging system and method, and vehicle carrying the system
US10502375B2 (en) 2016-03-21 2019-12-10 Hubbell Incorporated Light fixture with narrow light distribution
WO2017200862A1 (en) 2016-05-15 2017-11-23 3M Innovative Properties Company Light redirecting film constructions and methods of making them
CN109154693B (en) 2016-05-26 2021-05-04 3M创新有限公司 Polarizer stack
US11016229B2 (en) 2016-06-09 2021-05-25 3M Innovative Properties Company Optical filter
CN105892139B (en) * 2016-06-20 2019-02-01 深圳市华星光电技术有限公司 Liquid crystal display device
WO2017221528A1 (en) * 2016-06-20 2017-12-28 パナソニックIpマネジメント株式会社 Transparent screen and image display system
CN109415577A (en) 2016-06-27 2019-03-01 3M创新有限公司 Include composition, product and the method with 'alpha '-hydroxy acids or the functionalized nanoparticle of salt
US11009637B2 (en) 2016-07-12 2021-05-18 3M Innovative Properties Company Optical stack
WO2018013784A2 (en) 2016-07-13 2018-01-18 3M Innovative Properties Company Optical film
WO2018034854A1 (en) 2016-08-16 2018-02-22 3M Innovative Properties Company Polarizer
JP2018036585A (en) 2016-09-02 2018-03-08 日東電工株式会社 Optical member
PE20190464A1 (en) * 2016-09-02 2019-04-03 Vision Ease Lp INDEX MATCH LAYERS
JP2018036586A (en) 2016-09-02 2018-03-08 日東電工株式会社 Optical member
WO2018052872A1 (en) 2016-09-13 2018-03-22 3M Innovative Properties Company Single packet reflective polarizer with thickness profile tailored for low color at oblique angles
US10732332B2 (en) 2016-11-07 2020-08-04 Toray Industries, Inc. Light source unit
CN110023798B (en) * 2016-11-29 2020-11-27 3M创新有限公司 Optical stack
CN110087883B (en) 2016-12-16 2021-11-09 3M创新有限公司 Infrared reflection type optical transparent component and manufacturing method thereof
US11314097B2 (en) 2016-12-20 2022-04-26 3M Innovative Properties Company Optical system
JP6853500B2 (en) * 2016-12-22 2021-03-31 三菱ケミカル株式会社 Film winding layer
MX2019006555A (en) 2016-12-23 2019-08-21 Transitions Optical Ltd Method of manufacture of a lens with gradient properties using imbibition technology.
MX2019006554A (en) 2016-12-28 2019-08-14 Transitions Optical Ltd Method for imparting an optical element with a light influencing property in a gradient pattern.
CN113589412B (en) 2017-01-16 2024-02-13 3M创新有限公司 Faceted microstructured surface, optical film, and method
US10914961B2 (en) 2017-02-13 2021-02-09 Viavi Solutions Inc. Optical polarizing filter
US11662509B2 (en) 2017-03-02 2023-05-30 3M Innovative Properties Company Dynamic reflected color film with low optical caliper sensitivity
EP3593194A4 (en) 2017-03-06 2020-12-16 3M Innovative Properties Company Vehicle projection assembly
US11156757B2 (en) 2017-03-06 2021-10-26 3M Innovative Properties Company High contrast optical film and devices including the same
CN113608292B (en) 2017-03-06 2023-10-03 3M创新有限公司 Optical film
CN110506228B (en) 2017-03-31 2021-12-14 3M创新有限公司 Optical system
JP2020522752A (en) * 2017-06-05 2020-07-30 スリーエム イノベイティブ プロパティズ カンパニー Optical body including multilayer optical film and thin adhesive layer
US11384212B2 (en) 2017-06-23 2022-07-12 3M Innovative Properties Company Films with a primer layer containing silica nanoparticles modified by an organic silane
EP3642271A1 (en) 2017-06-23 2020-04-29 3M Innovative Properties Company Films with a primer layer containing composite particles that include an organic polymer portion and a siliceous portion
WO2019003109A1 (en) 2017-06-26 2019-01-03 3M Innovative Properties Company Roll of film including multilayer birefringent reflective polarizer having low pass axis variation
US11573361B2 (en) 2017-06-26 2023-02-07 3M Innovative Properties Company Roll of film including multilayer birefringent reflective polarizer and polyvinyl alcohol layer with low pass axis variation
US11442209B2 (en) * 2017-07-07 2022-09-13 Toyobo Co., Ltd. Multilayer film stack
WO2019012428A1 (en) 2017-07-12 2019-01-17 3M Innovative Properties Company Faceted microstructured surface
CN110869110B (en) 2017-07-14 2022-11-18 3M创新有限公司 Adapter for delivering multiple liquid streams
WO2019043491A1 (en) 2017-08-28 2019-03-07 3M Innovative Properties Company Solid siloxane polymers as delivery agents for siloxane tackifying resins
CN111051388B (en) 2017-08-31 2022-09-09 3M创新有限公司 Hyperbranched polydiorganosiloxane polyoxamide polymers
US11726245B2 (en) 2017-10-02 2023-08-15 3M Innovative Properties Company Partial reflector having stack of polymer layers for correcting color shift
EP4050385A1 (en) * 2017-10-03 2022-08-31 Toray Industries, Inc. Laminate film
WO2019073330A2 (en) 2017-10-09 2019-04-18 3M Innovative Properties Company Optical components and optical systems
CN111316146B (en) * 2017-10-10 2022-06-03 3M创新有限公司 Curved reflective polarizing film and method of forming the same
JP2021500605A (en) 2017-10-20 2021-01-07 スリーエム イノベイティブ プロパティズ カンパニー Optical film and polarizing beam splitter
JP7346396B2 (en) * 2017-10-20 2023-09-19 スリーエム イノベイティブ プロパティズ カンパニー optical assembly
KR20200074129A (en) 2017-10-25 2020-06-24 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Optical retarder segment
CN111279248B (en) 2017-10-27 2022-07-19 3M创新有限公司 Optical system
US11358355B2 (en) 2017-10-27 2022-06-14 3M Innovative Properties Company Shaped optical films and methods of shaping optical films
JP7257394B2 (en) 2017-10-27 2023-04-13 スリーエム イノベイティブ プロパティズ カンパニー Patterned optical retarder and manufacturing method thereof
JP2019095597A (en) 2017-11-22 2019-06-20 スタンレー電気株式会社 Liquid crystal device
US11073646B2 (en) 2017-12-01 2021-07-27 3M Innovative Properties Company Thin multilayer reflector with uniform left bandedge
US11885989B2 (en) 2017-12-13 2024-01-30 3M Innovative Properties Company High transmission light control film
WO2019123141A1 (en) 2017-12-20 2019-06-27 3M Innovative Properties Company Optical stack and polarizing beam splitter
WO2019130175A1 (en) 2017-12-28 2019-07-04 3M Innovative Properties Company Method for preparing multi-layer optical laminates
EP3743751A1 (en) 2018-01-26 2020-12-02 3M Innovative Properties Company Multilayer reflective polarizer with crystalline low index layers
US10850595B2 (en) 2018-03-07 2020-12-01 Magna Electronics Inc. Vehicular sensing system with attenuation of reflected-refracted light off of precipitation using light polarization
CN111954598B (en) * 2018-04-10 2023-02-28 东丽株式会社 Laminated film and display device
CN112041735B (en) * 2018-05-02 2023-09-01 3M创新有限公司 multilayer reflector
WO2019220377A1 (en) 2018-05-18 2019-11-21 3M Innovative Properties Company Shaped optical film
CN112166353A (en) 2018-05-22 2021-01-01 3M创新有限公司 Optical film with light controlling edge
US20210221080A1 (en) 2018-06-04 2021-07-22 3M Innovative Properties Company Thermoformed abrasion-resistant multilayer optical film and method of making the same
US11709299B2 (en) 2018-06-14 2023-07-25 3M Innovative Properties Company Optical assembly with protective coating
CN112400125B (en) * 2018-07-13 2024-03-12 3M创新有限公司 Optical system and optical film
CN112424657B (en) 2018-07-17 2023-02-28 3M创新有限公司 Optical film comprising an infrared reflector and a multilayer reflective polarizer with a crystalline low refractive index layer
WO2020016708A2 (en) 2018-07-18 2020-01-23 3M Innovative Properties Company Vehicle sensors comprising repellent surface, protective films, repellent coating compositions, and methods
US20210294005A1 (en) 2018-07-20 2021-09-23 3M Innovative Properties Company Optical film including polymeric optical reflector and discontinuous transparent coating
WO2020026139A1 (en) 2018-08-01 2020-02-06 3M Innovative Properties Company High transmission light control film
JP2021534452A (en) 2018-08-14 2021-12-09 スリーエム イノベイティブ プロパティズ カンパニー Optical system
CN112585506A (en) 2018-08-15 2021-03-30 3M创新有限公司 Optical element comprising a microlens array
US20210302633A1 (en) 2018-08-23 2021-09-30 3M Innovative Properties Company Photochromic articles
EP3847488A1 (en) 2018-09-06 2021-07-14 3M Innovative Properties Company Multilayer reflective polarizer with crystalline low index layers
US20200127152A1 (en) 2018-09-14 2020-04-23 3M Innovative Properties Company Bifacial solar panel
CN112673290B (en) 2018-09-14 2023-08-01 3M创新有限公司 Optical film
CN113056392A (en) * 2018-09-19 2021-06-29 新璞修人有限公司 Cosmetic mirror
US20220050287A1 (en) 2018-09-24 2022-02-17 3M Innovative Properties Company Glass laminate including reflective film
EP3891537A2 (en) 2018-12-07 2021-10-13 3M Innovative Properties Company Optical film and polarizing beam splitter
US20220057632A1 (en) 2018-12-21 2022-02-24 3M Innovative Properties Company Compact heads-up display
CN113287061A (en) * 2019-01-07 2021-08-20 3M创新有限公司 Backlight for an image forming apparatus including an optical cavity formed by opposing cold and hot mirrors
EP3696578A1 (en) * 2019-02-14 2020-08-19 Carl Zeiss AG Refractive optical component and resulting spectacle lens, method for producing a refractive optical component, computer program product, construction data stored on a data carrier, device for additive manufacturing of a base body and spectacle lens
TW202102882A (en) 2019-03-11 2021-01-16 美商3M新設資產公司 High efficiency infrared reflector having reduced color
WO2020190326A1 (en) 2019-03-15 2020-09-24 3M Innovative Properties Company Determining causal models for controlling environments
WO2020194146A1 (en) 2019-03-26 2020-10-01 3M Innovative Properties Company Sensor array spectrometer
US20220146728A1 (en) 2019-04-03 2022-05-12 3M Innovative Properties Company Optical film and glass laminate
US11678975B2 (en) 2019-04-05 2023-06-20 Amo Groningen B.V. Systems and methods for treating ocular disease with an intraocular lens and refractive index writing
US11583388B2 (en) 2019-04-05 2023-02-21 Amo Groningen B.V. Systems and methods for spectacle independence using refractive index writing with an intraocular lens
US11802795B2 (en) 2019-04-05 2023-10-31 3M Innovative Properties Company Sensor array spectrometer
US11564839B2 (en) 2019-04-05 2023-01-31 Amo Groningen B.V. Systems and methods for vergence matching of an intraocular lens with refractive index writing
US11529230B2 (en) 2019-04-05 2022-12-20 Amo Groningen B.V. Systems and methods for correcting power of an intraocular lens using refractive index writing
US11583389B2 (en) 2019-04-05 2023-02-21 Amo Groningen B.V. Systems and methods for correcting photic phenomenon from an intraocular lens and using refractive index writing
US20220123267A1 (en) 2019-04-18 2022-04-21 3M Innovative Properties Company Organic light emitting diode display with color-correction component
WO2020222117A1 (en) 2019-04-30 2020-11-05 3M Innovative Properties Company Optical stack
US20220187606A1 (en) * 2019-05-03 2022-06-16 3M Innovative Properties Company Optical system
US20220221627A1 (en) 2019-05-31 2022-07-14 3M Innovative Properties Company Composite cooling film and article including the same
US11906252B2 (en) 2019-05-31 2024-02-20 3M Innovative Properties Company Composite cooling film and article including the same
EP3983836A4 (en) 2019-06-12 2023-06-28 3M Innovative Properties Company High transmission light control films with asymmetric light output
EP3983834A1 (en) 2019-06-12 2022-04-20 3M Innovative Properties Company Coated substrate comprising electrically conductive particles and dried aqueous dispersion of organic polymer
CN114041074A (en) 2019-07-02 2022-02-11 3M创新有限公司 Optical device comprising a wavelength-selective optical filter with a down-converter
EP3763517A1 (en) 2019-07-09 2021-01-13 Essilor International Method for manufacturing a photochromic optical article
CN211741780U (en) 2019-09-06 2020-10-23 3M创新有限公司 Backlight, display system and optical diffuse reflection film assembly
CN114503022A (en) 2019-10-11 2022-05-13 3M创新有限公司 Optical layer, optical film and optical system
WO2021094950A1 (en) 2019-11-15 2021-05-20 3M Innovative Properties Company Ionomeric polyester-based pressure sensitive adhesives
US20230017066A1 (en) * 2019-12-05 2023-01-19 3M Innovative Properties Company Optical system and heads up display systems
WO2021111291A1 (en) 2019-12-06 2021-06-10 3M Innovative Properties Company Optical assembly with encapsulated multilayer optical film and methods of making same
WO2021116833A1 (en) 2019-12-09 2021-06-17 3M Innovative Properties Company Flame-retardant pressure sensitive adhesives
CN114902087A (en) 2020-01-16 2022-08-12 3M创新有限公司 Composite cooling film comprising a reflective non-porous organic polymer layer and a UV protective layer
WO2021152446A1 (en) * 2020-01-29 2021-08-05 3M Innovative Properties Company Multilayer film
JP2023512711A (en) * 2020-02-07 2023-03-28 スリーエム イノベイティブ プロパティズ カンパニー Reflective polarizers and display systems
US11921373B2 (en) * 2020-02-10 2024-03-05 3M Innovative Properties Company Backlight for display
US11885999B2 (en) 2020-05-08 2024-01-30 3M Innovation Properties Company Optical construction and display system
US20230160607A1 (en) 2020-05-15 2023-05-25 3M Innovative Properties Company Hybrid solar window and ir absorbing assemblies
US11675118B2 (en) * 2020-09-15 2023-06-13 Meta Platforms Technologies, Llc Optically anisotropic film stack including solid crystal and fabrication method thereof
WO2022079597A1 (en) 2020-10-14 2022-04-21 3M Innovative Properties Company Multilayer articles including an absorbent layer and an ultraviolet mirror, systems, devices, and methods of disinfecting
WO2022079507A1 (en) 2020-10-15 2022-04-21 3M Innovative Properties Company Reflective polarizer and display system including same
TWI747575B (en) * 2020-10-26 2021-11-21 南亞塑膠工業股份有限公司 Polymer film with laminated structure
WO2022101783A1 (en) 2020-11-16 2022-05-19 3M Innovative Properties Company High temperature stable optically transparent pressure sensitive ahdesives
FR3116350B1 (en) 2020-11-19 2023-06-02 Eyelights Head-up display device
WO2022122640A1 (en) 2020-12-11 2022-06-16 Saint-Gobain Glass France Composite panel for a head-up display
CN116635759A (en) 2020-12-18 2023-08-22 3M创新有限公司 Optical structure comprising lens film and mask
CN116600975A (en) 2020-12-18 2023-08-15 3M创新有限公司 Optical structure comprising lens film and mask
WO2022130082A1 (en) 2020-12-18 2022-06-23 3M Innovative Properties Company Optical construction including lens film and mask
WO2022144633A1 (en) 2021-01-04 2022-07-07 3M Innovative Properties Company Devices and systems including an electronic display, recycling light cavity, and uvc light source, and methods of disinfecting
KR20230137957A (en) 2021-02-26 2023-10-05 쌩-고벵 글래스 프랑스 Projection array comprising composite panes and P-polarized radiation
JP2024506413A (en) 2021-04-09 2024-02-13 サン-ゴバン グラス フランス Heatable composite pane for projection assembly
WO2022218699A1 (en) 2021-04-12 2022-10-20 Saint-Gobain Glass France Projection arrangement comprising a composite pane
WO2022229140A1 (en) 2021-04-28 2022-11-03 Saint-Gobain Glass France Method for producing a composite pane comprising a film with functional properties
US20220350064A1 (en) * 2021-04-28 2022-11-03 Meta Platforms Technologies, Llc Thin film laminates having controlled strain
CN115551706A (en) 2021-04-29 2022-12-30 法国圣戈班玻璃厂 Composite sheet with functional membrane and current collector
EP4330038A1 (en) 2021-04-30 2024-03-06 Saint-Gobain Glass France Composite pane for a projection assembly
WO2022238101A1 (en) 2021-05-12 2022-11-17 Saint-Gobain Glass France Composite pane having heatable regions and intended for a projection assembly
WO2022269437A1 (en) * 2021-06-23 2022-12-29 3M Innovative Properties Company Optical film, backlight, and display
CN115803191A (en) 2021-06-24 2023-03-14 法国圣戈班玻璃厂 Composite glass plate with functional film and camera window
CN115835960A (en) 2021-06-25 2023-03-21 法国圣戈班玻璃厂 Composite glass pane having a functional film with opaque print
WO2022268554A1 (en) 2021-06-25 2022-12-29 Saint-Gobain Glass France Method for producing a laminated sheet with reflective display film
WO2023007303A1 (en) * 2021-07-30 2023-02-02 3M Innovative Properties Company Optical film and display system including same
WO2023016975A1 (en) 2021-08-11 2023-02-16 Saint-Gobain Glass France Pane with functional layer for suppressing coloured reflections
WO2023031180A1 (en) 2021-09-03 2023-03-09 Saint-Gobain Glass France Composite pane for a head-up display
WO2023031176A1 (en) 2021-09-03 2023-03-09 Saint-Gobain Glass France Composite pane for a head-up display
CN116194822A (en) 2021-09-28 2023-05-30 法国圣戈班玻璃厂 Projection device comprising a composite glass pane
CN116615687A (en) 2021-12-15 2023-08-18 法国圣戈班玻璃厂 Composite glass plate for projection device
WO2023186636A1 (en) 2022-03-30 2023-10-05 Saint-Gobain Glass France Composite panel with a linear polarisation filter
WO2023186637A1 (en) 2022-03-30 2023-10-05 Saint-Gobain Glass France Composite panel with a waveplate
EP4253019A1 (en) 2022-03-31 2023-10-04 Essilor International Late-stage catalysis of fast room-temperature polymerizations
CN117241940A (en) * 2022-04-13 2023-12-15 法国圣戈班玻璃厂 Composite glass plate for projection device
WO2023203390A1 (en) 2022-04-19 2023-10-26 3M Innovative Properties Company Broadband reflectors including polymeric layers, and composite cooling systems
CN117320879A (en) 2022-04-27 2023-12-29 法国圣-戈班玻璃公司 Composite glass sheet having a first reflective layer and a second reflective layer
WO2023208962A1 (en) 2022-04-27 2023-11-02 Saint-Gobain Glass France Composite pane with a reflective layer and a hologram element
CN117321476A (en) 2022-04-28 2023-12-29 法国圣-戈班玻璃公司 Projection assembly comprising a composite glass sheet
WO2023208763A1 (en) 2022-04-29 2023-11-02 Saint-Gobain Glass France Projection assembly comprising a composite pane
WO2023223114A1 (en) 2022-05-19 2023-11-23 3M Innovative Properties Company Light shielding articles and electromagnetic receivers and/or emitters including the same
CN117460620A (en) 2022-05-25 2024-01-26 法国圣戈班玻璃厂 Composite glass pane with reflective element
CN115113375B (en) * 2022-08-23 2022-11-18 立臻精密智造(昆山)有限公司 Camera module and camera device

Family Cites Families (231)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US34605A (en) * 1862-03-04 George westinghouse
US540768A (en) 1895-06-11 Richard walsingham western
US3124639A (en) * 1964-03-10 figure
US2604817A (en) 1948-10-14 1952-07-29 Du Pont Light polarizing composition
US2776598A (en) * 1951-04-13 1957-01-08 Charles P Dreyer Mirror having a dichroic layer
US2887566A (en) * 1952-11-14 1959-05-19 Marks Polarized Corp Glare-eliminating optical system
US3051452A (en) * 1957-11-29 1962-08-28 American Enka Corp Process and apparatus for mixing
NL103356C (en) * 1958-07-08 1900-01-01
NL263534A (en) * 1959-10-13
US3195865A (en) * 1960-09-09 1965-07-20 Dow Chemical Co Interfacial surface generator
US3213753A (en) * 1962-01-24 1965-10-26 Polaroid Corp Multilayer lenticular light polarizing device
US3438691A (en) * 1964-05-14 1969-04-15 Polaroid Corp Birefringent polarizer
US3397428A (en) * 1964-08-14 1968-08-20 Dow Chemical Co Apparatus for the preparation of thermoplastic resinous composite articles
US3308508A (en) * 1964-10-02 1967-03-14 Dow Chemical Co Die
US3321804A (en) * 1964-10-14 1967-05-30 Dow Chemical Co Extrusion of wide thermoplastic film and sheet
US3442755A (en) * 1965-03-29 1969-05-06 Dow Chemical Co Ornamental paper incorporating plastic elements
US3549405A (en) * 1965-03-29 1970-12-22 Dow Chemical Co Iridescent resinous film bodies and a substrate coated therewith
US3479425A (en) * 1965-07-22 1969-11-18 Dow Chemical Co Extrusion method
US3400190A (en) * 1965-07-28 1968-09-03 Dow Chemical Co Method and apparatus for the extrusion of multi-layer film and sheet
CA1200357A (en) 1965-08-18 1986-02-11 Douglas S. Chisholm Extruding laminated sheet with alteration of stream dimensions in die
US3415920A (en) * 1965-08-19 1968-12-10 Dow Chemical Co Multilayer extrusion process
US3334382A (en) * 1965-08-30 1967-08-08 Dow Chemical Co Extrusion adapter
US3327349A (en) * 1965-08-30 1967-06-27 Dow Chemical Co Extrusion adaptor
US3423498A (en) * 1965-09-20 1969-01-21 Dow Chemical Co Method of producing colored plastic film or sheet
US3315306A (en) * 1965-10-15 1967-04-25 Dow Chemical Co Apparatus for the production of multilayer film
US3498873A (en) * 1965-10-29 1970-03-03 Dow Chemical Co Net structures of multicomponent filaments
US3480502A (en) * 1965-11-22 1969-11-25 Dow Chemical Co Method of making christmas tinsel
US3448183A (en) * 1966-08-05 1969-06-03 Dow Chemical Co Method for the preparation of multilayer film
US3579416A (en) * 1966-12-19 1971-05-18 Dow Chemical Co Packaging film comprising polyolefin outer layers and plural inner gas barrier layers
NL6717206A (en) * 1966-12-22 1968-06-24
NL6805540A (en) * 1967-05-05 1968-11-06
US3511903A (en) * 1967-05-05 1970-05-12 Dow Chemical Co Method for extruding thermally degradable polymers
US3556635A (en) * 1967-05-23 1971-01-19 Dow Chemical Co Fiber optic bundle
US3487505A (en) * 1967-08-21 1970-01-06 Dow Chemical Co Laminates
US3399105A (en) * 1967-10-05 1968-08-27 Dow Chemical Co Unfoldable thermoplastic sheet
US3557265A (en) * 1967-12-29 1971-01-19 Dow Chemical Co Method of extruding laminates
US3645837A (en) * 1967-12-29 1972-02-29 Dow Chemical Co Laminates
US3508809A (en) 1967-12-29 1970-04-28 Rca Corp High efficiency light polarization system
US3508808A (en) * 1969-04-04 1970-04-28 Bunker Ramo Digit light deflector
US3759647A (en) * 1969-04-10 1973-09-18 Turner Alfrey Us Apparatus for the preparation of multilayer plastic articles
US3565985A (en) * 1969-04-10 1971-02-23 Dow Chemical Co Method of preparing multilayer plastic articles
US3801429A (en) * 1969-06-06 1974-04-02 Dow Chemical Co Multilayer plastic articles
US3647612A (en) * 1969-06-06 1972-03-07 Dow Chemical Co Multilayer plastic articles
US3600587A (en) * 1969-06-10 1971-08-17 Us Army Frequency shift keying laser communication system
US3610729A (en) * 1969-06-18 1971-10-05 Polaroid Corp Multilayered light polarizer
US3746485A (en) * 1969-07-16 1973-07-17 Dow Chemical Co Apparatus for the production of net-like structures
GB1330836A (en) 1969-11-24 1973-09-19 Vickers Ltd Optical field-flattening devices
US3716612A (en) * 1970-01-06 1973-02-13 Dow Chemical Co Method for the formation of composite plastic bodies
US3687589A (en) * 1970-07-20 1972-08-29 Dow Chemical Co Apparatus for the controlled extrusion of multi-component synthetic resinous bodies
US3860036A (en) * 1970-11-02 1975-01-14 Dow Chemical Co Variable geometry feed block for multilayer extrusion
US3711176A (en) * 1971-01-14 1973-01-16 Dow Chemical Co Highly reflective thermoplastic bodies for infrared, visible or ultraviolet light
US3860372A (en) * 1971-02-26 1975-01-14 Dow Chemical Co Adjustable feedblock for encapsulated multilayer extrusion
US3743459A (en) * 1971-05-19 1973-07-03 Dow Chemical Co Apparatus for coextrusion of multilayer sheet or films
CA1007015A (en) * 1971-09-27 1977-03-22 Walter J. Schrenk Coextrusion apparatus
BE789478A (en) * 1971-10-01 1973-03-29 Dow Chemical Co METHOD AND DEVICE FOR EXTRUDING PLASTICS IN MULTI-LAYER SHEETS
US3884606A (en) * 1971-10-01 1975-05-20 Dow Chemical Co Apparatus for multilayer coextrusion of sheet or film
US3847585A (en) * 1973-01-08 1974-11-12 Dow Chemical Co Method for the preparation of multilayer optical filters
US4025688A (en) * 1974-08-01 1977-05-24 Polaroid Corporation Polarizer lamination
US4094947A (en) * 1976-09-03 1978-06-13 The Dow Chemical Company Multilayer coextrusion process for producing selective reflectivity
US4308316A (en) * 1977-04-04 1981-12-29 Gordon Roy G Non-iridescent glass structures
US4162343A (en) * 1977-12-23 1979-07-24 The Mearl Corporation Multilayer light-reflecting film
US4190832A (en) * 1978-04-18 1980-02-26 Sailor Mohler Polarized windshield indicia reflection display system
DE2915847C2 (en) * 1978-09-29 1986-01-16 Nitto Electric Industrial Co., Ltd., Ibaraki, Osaka Electro-optically activated display
GB2052779B (en) 1979-05-29 1983-06-22 Texas Instruments Inc Liquid crystal display cell
US4310584A (en) * 1979-12-26 1982-01-12 The Mearl Corporation Multilayer light-reflecting film
USRE31780E (en) 1979-12-26 1984-12-25 The Mearl Corporation Multilayer light-reflecting film
US4840463A (en) * 1987-08-19 1989-06-20 Clark Noel A Surface stabilized ferroelectric liquid crystal devices
US4315258A (en) * 1980-02-15 1982-02-09 The United States Of America As Represented By The Secretary Of The Navy Transmissive and reflective liquid crystal display
DE3102626A1 (en) 1981-01-27 1982-08-19 Siemens AG, 1000 Berlin und 8000 München "PASSIVE ELECTROOPTICAL DISPLAY DEVICE"
US4521588A (en) * 1981-03-02 1985-06-04 Polaroid Corporation Optical device including birefringent polyhydrazide polymer
US4503248A (en) * 1981-03-02 1985-03-05 Polaroid Corporation Substituted-quaterphenylene monomers for the production of polyamides therefrom
US4393194A (en) * 1981-03-02 1983-07-12 Polaroid Corporation Substituted-quaterphenylene polyamide
US4520189A (en) * 1981-03-02 1985-05-28 Polaroid Corporation Optical device including birefringent aromatic amino carboxylic acid polymer
US4525413A (en) * 1981-03-02 1985-06-25 Polaroid Corporation Optical device including birefringent polymer
US4446305A (en) * 1981-03-02 1984-05-01 Polaroid Corporation Optical device including birefringent polymer
US4377613A (en) * 1981-09-14 1983-03-22 Gordon Roy G Non-iridescent glass structures
JPS58101021A (en) * 1981-12-12 1983-06-16 Toyobo Co Ltd Biaxially orientated polyester film
JPS58143305A (en) * 1982-02-22 1983-08-25 Hitachi Ltd Display panel
US4511220A (en) * 1982-12-23 1985-04-16 The United States Of America As Represented By The Secretary Of The Air Force Laser target speckle eliminator
US4590119A (en) * 1983-07-15 1986-05-20 Toray Industries, Inc. Polyester film and magnetic recording medium therefrom
US4542449A (en) * 1983-08-29 1985-09-17 Canadian Patents & Development Limited Lighting panel with opposed 45° corrugations
US4540623A (en) * 1983-10-14 1985-09-10 The Dow Chemical Company Coextruded multi-layered articles
JPS60134204A (en) * 1983-12-23 1985-07-17 Mitsui Toatsu Chem Inc Polarizing film
JPS6187757A (en) * 1984-10-05 1986-05-06 Mitsui Toatsu Chem Inc Coloring matter and polarizing film obtained by using the same
US5286418A (en) 1984-10-05 1994-02-15 Mitsui Toatsu Chemicals, Incorporated Polarizing film
US4659523A (en) * 1984-11-30 1987-04-21 American Hoechst Corporation Production of iodine stainable polyester polarizer film
US4974946A (en) * 1985-02-08 1990-12-04 Solomon Dennis J High contrast display device enclosure system using transparent light polarizing means
DE3616046C2 (en) * 1985-05-13 1996-04-25 Ricoh Kk Liquid crystal display device with a printed circuit board
US4661303A (en) * 1985-06-11 1987-04-28 The Dow Chemical Company Reactive coextrusion of functionalized polymers
GB2177814B (en) * 1985-07-11 1989-08-23 Coherent Inc Polarization preserving reflector and method
US4643927A (en) * 1985-07-18 1987-02-17 The Dow Chemical Company Tubular, multi-layer film and method of making
US4627138A (en) * 1985-08-06 1986-12-09 The Dow Chemical Company Method of making piezoelectric/pyroelectric elements
US4636442A (en) * 1985-10-11 1987-01-13 Eastman Kodak Company Laminated structures of polyethylene terephthalate and elastomeric copolyesterethers
US5056892A (en) * 1985-11-21 1991-10-15 Minnesota Mining And Manufacturing Company Totally internally reflecting thin, flexible film
US4723077A (en) 1985-12-06 1988-02-02 Hughes Aircraft Company Dual liquid crystal light valve based visible-to-infrared dynamic image converter system
JPS62135338A (en) * 1985-12-09 1987-06-18 Diafoil Co Ltd Monoaxially high-orientated film of polyethylene-naphthalate for liquid crystal panel substrate
JPH0743445B2 (en) * 1985-12-09 1995-05-15 ダイアホイルヘキスト株式会社 Polyethylene naphthalate uniaxial highly oriented film for polarizing plate
US4720426A (en) * 1986-06-30 1988-01-19 General Electric Company Reflective coating for solid-state scintillator bar
JPH0792561B2 (en) * 1986-07-08 1995-10-09 株式会社精工舎 Projection liquid crystal display
US5009472A (en) * 1987-01-08 1991-04-23 Asahi Kogaku Kogyo Kabushiki Kaisha Light scanning device with polarizing device to make light transmission more uniform
US4989076A (en) * 1987-01-27 1991-01-29 Canon Kabushiki Kaisha Video projection apparatus
CA1278203C (en) * 1987-04-24 1990-12-27 Lorne A. Whitehead Non-reflective image display device
US5237446A (en) 1987-04-30 1993-08-17 Olympus Optical Co., Ltd. Optical low-pass filter
US4791540A (en) * 1987-05-26 1988-12-13 Minnesota Mining And Manufacturing Company Light fixture providing normalized output
US4797308A (en) * 1987-07-06 1989-01-10 The Mearl Corporation Simulated mother-of-pearl
DE3854491T2 (en) 1987-10-07 1996-05-09 Matsushita Electric Ind Co Ltd Liquid crystal display.
US4965135A (en) * 1987-12-14 1990-10-23 The Dow Chemical Company Multilayer film with dead fold and twistability characteristics
US4798448A (en) * 1988-02-16 1989-01-17 General Electric Company High efficiency illumination system for display devices
US5211878A (en) * 1988-03-10 1993-05-18 Merck Patent Gesellschaft Mit Beschrankter Haftung Difluorobenzonitrile derivatives
US4952023A (en) * 1988-03-18 1990-08-28 Minnesota Mining And Manufacturing Company Internally illuminated retroreflective sign
JP2862571B2 (en) 1988-07-28 1999-03-03 株式会社東芝 Transmissive liquid crystal display
US4895769A (en) * 1988-08-09 1990-01-23 Polaroid Corporation Method for preparing light polarizer
US4895420A (en) 1988-08-22 1990-01-23 Gte Products Corporation High reflectance light guide
US5013107A (en) * 1988-09-15 1991-05-07 Biles Jonathan R Polarization selective holographic optical element
US4874568A (en) * 1988-09-26 1989-10-17 The Dow Chemical Company Process of making a porous membrane
US4963304A (en) * 1988-09-26 1990-10-16 The Dow Chemical Company Process for preparing microporous membranes
US4873037A (en) * 1988-10-05 1989-10-10 The Dow Chemical Company Method for preparing an asymmetric semi-permeable membrane
US5042921A (en) * 1988-10-25 1991-08-27 Casio Computer Co., Ltd. Liquid crystal display apparatus
US5077121A (en) 1988-10-27 1991-12-31 Shell Oil Company High strength high modulus polyolefin composite with improved solid state drawability
DE68923929T2 (en) 1988-11-04 1996-03-07 Fuji Photo Film Co Ltd Liquid crystal display.
EP0425685B1 (en) 1989-03-28 1995-07-12 Asahi Glass Company Ltd. Liquid crystal display device
US4917465A (en) * 1989-03-28 1990-04-17 In Focus Systems, Inc. Color display system
US4937134A (en) * 1989-04-17 1990-06-26 The Dow Chemical Company Elastomeric optical interference films
GB2232498B (en) 1989-05-26 1993-08-04 Marconi Gec Ltd Optical interference filter
US5262894A (en) 1989-06-20 1993-11-16 The Dow Chemical Company Multicomponent, multilayer polymeric reflective bodies
US5486949A (en) * 1989-06-20 1996-01-23 The Dow Chemical Company Birefringent interference polarizer
US5122905A (en) * 1989-06-20 1992-06-16 The Dow Chemical Company Relective polymeric body
US5093739A (en) 1989-06-22 1992-03-03 Citizen Watch Co. Liquid crystal display device and retardation film
US5235443A (en) * 1989-07-10 1993-08-10 Hoffmann-La Roche Inc. Polarizer device
JP2893599B2 (en) 1989-10-05 1999-05-24 セイコーエプソン株式会社 Polarized light source and projection display
EP0422661A3 (en) 1989-10-13 1992-07-01 Mitsubishi Rayon Co., Ltd Polarization forming optical device and polarization beam splitter
JPH03132603A (en) 1989-10-18 1991-06-06 Matsushita Electric Ind Co Ltd Polarizer
DE69016349T2 (en) 1989-10-27 1995-06-29 Fuji Photo Film Co Ltd Liquid crystal display.
US5089318A (en) 1989-10-31 1992-02-18 The Mearl Corporation Iridescent film with thermoplastic elastomeric components
DE59008313D1 (en) * 1989-11-01 1995-03-02 Hoffmann La Roche TEMPERATURE COMPENSATION OF LIQUID CRYSTAL PARAMETERS.
JP2924055B2 (en) 1989-12-08 1999-07-26 セイコーエプソン株式会社 Reflective liquid crystal display
US5202074A (en) 1989-12-26 1993-04-13 The Dow Chemical Company Method for producing injection molded multilayer articles
US5149578A (en) 1989-12-26 1992-09-22 The Dow Chemical Company Multilayer film for tamper indication by use of optical interference reflection
US5278694A (en) 1990-01-11 1994-01-11 The Dow Chemical Company Optically dissimilar composition for polymeric reflective bodies
FR2660448B1 (en) 1990-04-03 1992-06-05 Thomson Csf DEVICE FOR PROJECTING IMAGES.
US5095210A (en) 1990-04-06 1992-03-10 The Dow Chemical Company Multilayer film indicator for determining the integrity or authenticity of an item and process for using same
NL9000808A (en) * 1990-04-06 1991-11-01 Koninkl Philips Electronics Nv LIQUID CRYSTALLINE MATERIAL AND IMAGE DISPLAY CELL CONTAINING THIS MATERIAL.
US5157526A (en) 1990-07-06 1992-10-20 Hitachi, Ltd. Unabsorbing type polarizer, method for manufacturing the same, polarized light source using the same, and apparatus for liquid crystal display using the same
US5103337A (en) 1990-07-24 1992-04-07 The Dow Chemical Company Infrared reflective optical interference film
US5202950A (en) 1990-09-27 1993-04-13 Compaq Computer Corporation Backlighting system with faceted light pipes
US5245456A (en) 1990-10-24 1993-09-14 Nitto Denko Corporation Birefringent film with nx >nz >ny, process for producing the same, retardation film, elliptically polarizing plate, and liquid crystal display
US5126880A (en) 1990-12-18 1992-06-30 The Dow Chemical Company Polymeric reflective bodies with multiple layer types
US5094793A (en) 1990-12-21 1992-03-10 The Dow Chemical Company Methods and apparatus for generating interfacial surfaces
US5215825A (en) * 1990-12-21 1993-06-01 Toray Industries, Inc. Polyester film and photosensitive material
US5094788A (en) 1990-12-21 1992-03-10 The Dow Chemical Company Interfacial surface generator
US5217794A (en) 1991-01-22 1993-06-08 The Dow Chemical Company Lamellar polymeric body
JP2913864B2 (en) 1991-03-04 1999-06-28 株式会社日立製作所 Polarization conversion optical system, polarization beam splitter, and liquid crystal display device
GB2256725B (en) 1991-06-10 1995-01-18 Alps Electric Co Ltd Polarising light separation element and light receiving optical device using same
BR9206133A (en) 1991-06-13 1994-11-29 Minnesota Mining & Mfg Retro-reflective polarizer and optics
US5337174A (en) 1991-06-17 1994-08-09 Seiko Epson Corporation Optical compensator and liquid crystal display
US5221982A (en) 1991-07-05 1993-06-22 Faris Sadeg M Polarizing wavelength separator
WO1993007733A1 (en) 1991-10-11 1993-04-15 Norand Corporation Drive circuit for electroluminescent panels and the like
US5238738A (en) 1991-10-29 1993-08-24 Minnesota Mining And Manufacturing Company Polymeric minus filter
CA2130810A1 (en) 1992-02-25 1993-09-02 Walter J. Schrenk All-polymeric ultraviolet reflecting film
US5234729A (en) 1992-02-27 1993-08-10 The Dow Chemical Company Multilayer polymeric reflective bodies for decorative and security applications
US5309544A (en) 1992-03-31 1994-05-03 Minnesota Mining And Manufacturing Company Light pipe having optimized cross-section
JP3015201B2 (en) 1992-05-06 2000-03-06 キヤノン株式会社 Image forming apparatus, projection display apparatus, and light modulation apparatus
US5294657A (en) * 1992-05-15 1994-03-15 Melendy Peter S Adhesive composition with decorative glitter
US5422756A (en) 1992-05-18 1995-06-06 Minnesota Mining And Manufacturing Company Backlighting system using a retroreflecting polarizer
US5233465A (en) 1992-05-27 1993-08-03 The Dow Chemical Company Visibly transparent infrared reflecting film with color masking
DE4326521B4 (en) 1992-08-10 2005-12-22 Bridgestone Corp. Light scattering material and method for its production
US5303083A (en) 1992-08-26 1994-04-12 Hughes Aircraft Company Polarized light recovery
US5339179A (en) 1992-10-01 1994-08-16 International Business Machines Corp. Edge-lit transflective non-emissive display with angled interface means on both sides of light conducting panel
US5269995A (en) 1992-10-02 1993-12-14 The Dow Chemical Company Coextrusion of multilayer articles using protective boundary layers and apparatus therefor
US5339198A (en) 1992-10-16 1994-08-16 The Dow Chemical Company All-polymeric cold mirror
AU5322594A (en) * 1992-10-29 1994-05-24 Dow Chemical Company, The Formable reflective multilayer body
TW289095B (en) 1993-01-11 1996-10-21
EP0606939B1 (en) * 1993-01-11 1998-05-06 Koninklijke Philips Electronics N.V. Illumination system and display device including such a system
US5360659A (en) 1993-05-24 1994-11-01 The Dow Chemical Company Two component infrared reflecting film
US5389324A (en) 1993-06-07 1995-02-14 The Dow Chemical Company Layer thickness gradient control in multilayer polymeric bodies
US5532331A (en) 1993-06-24 1996-07-02 The Dow Chemical Company Thiodiphenol copolycarbonates and their use as components of multilayered polymeric reflective bodies
US5486935A (en) * 1993-06-29 1996-01-23 Kaiser Aerospace And Electronics Corporation High efficiency chiral nematic liquid crystal rear polarizer for liquid crystal displays having a notch polarization bandwidth of 100 nm to 250 nm
US6498683B2 (en) * 1999-11-22 2002-12-24 3M Innovative Properties Company Multilayer optical bodies
US5828488A (en) 1993-12-21 1998-10-27 Minnesota Mining And Manufacturing Co. Reflective polarizer display
US6025897A (en) * 1993-12-21 2000-02-15 3M Innovative Properties Co. Display with reflective polarizer and randomizing cavity
EP0962807B1 (en) * 1993-12-21 2008-12-03 Minnesota Mining And Manufacturing Company Multilayered optical film
CA2178325A1 (en) * 1993-12-21 1995-06-29 Andrew J. Ouderkirk Reflective polarizer with brightness enhancement
US5882774A (en) * 1993-12-21 1999-03-16 Minnesota Mining And Manufacturing Company Optical film
KR100344364B1 (en) * 1993-12-21 2002-11-30 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 Optical Polarizers and Display Devices
EP0736196B1 (en) * 1993-12-21 2002-07-17 Minnesota Mining And Manufacturing Company Reflective polarizer display
JP3534319B2 (en) 1993-12-22 2004-06-07 株式会社小松製作所 Unloading device used for hydraulic circuit
US5424119A (en) 1994-02-04 1995-06-13 Flex Products, Inc. Polymeric sheet having oriented multilayer interference thin film flakes therein, product using the same and method
US5629055A (en) * 1994-02-14 1997-05-13 Pulp And Paper Research Institute Of Canada Solidified liquid crystals of cellulose with optically variable properties
US5379083A (en) * 1994-02-15 1995-01-03 Raychem Corporation Projector
US5481445A (en) 1994-02-15 1996-01-02 Lexalite International Corp. Transflection reflector having controlled reflected and transmitted light distribution
CA2187177A1 (en) * 1994-04-06 1995-10-19 Mark E. Gardiner Polarized light sources
US5451449A (en) 1994-05-11 1995-09-19 The Mearl Corporation Colored iridescent film
US5594563A (en) * 1994-05-31 1997-01-14 Honeywell Inc. High resolution subtractive color projection system
JP3295583B2 (en) 1994-12-19 2002-06-24 シャープ株式会社 Optical device and head-mounted display using the optical device
JP4034365B2 (en) 1995-03-09 2008-01-16 大日本印刷株式会社 Ultrafine particle-containing antireflection film, polarizing plate and liquid crystal display device
US5751388A (en) 1995-04-07 1998-05-12 Honeywell Inc. High efficiency polarized display
US5621486A (en) * 1995-06-22 1997-04-15 International Business Machines Corporation Efficient optical system for a high resolution projection display employing reflection light valves
EP0855043B1 (en) 1995-06-26 2003-02-05 Minnesota Mining And Manufacturing Company Diffusely reflecting multilayer polarizers and mirrors
US6080467A (en) * 1995-06-26 2000-06-27 3M Innovative Properties Company High efficiency optical devices
US6737154B2 (en) 1995-06-26 2004-05-18 3M Innovative Properties Company Multilayer polymer film with additional coatings or layers
US5686979A (en) * 1995-06-26 1997-11-11 Minnesota Mining And Manufacturing Company Optical panel capable of switching between reflective and transmissive states
US5699188A (en) * 1995-06-26 1997-12-16 Minnesota Mining And Manufacturing Co. Metal-coated multilayer mirror
JP4122057B2 (en) * 1995-06-26 2008-07-23 スリーエム カンパニー Multilayer polymer film with additional coatings or layers
US6088067A (en) * 1995-06-26 2000-07-11 3M Innovative Properties Company Liquid crystal display projection system using multilayer optical film polarizers
US5767935A (en) 1995-08-31 1998-06-16 Sumitomo Chemical Company, Limited Light control sheet and liquid crystal display device comprising the same
US5783120A (en) 1996-02-29 1998-07-21 Minnesota Mining And Manufacturing Company Method for making an optical film
AU713583B2 (en) * 1996-02-29 1999-12-02 Minnesota Mining And Manufacturing Company Brightness enhancement film
US5867316A (en) * 1996-02-29 1999-02-02 Minnesota Mining And Manufacturing Company Multilayer film having a continuous and disperse phase
US5825543A (en) 1996-02-29 1998-10-20 Minnesota Mining And Manufacturing Company Diffusely reflecting polarizing element including a first birefringent phase and a second phase
US5808794A (en) 1996-07-31 1998-09-15 Weber; Michael F. Reflective polarizers having extended red band edge for controlled off axis color
US6390626B2 (en) 1996-10-17 2002-05-21 Duke University Image projection system engine assembly
US6486997B1 (en) * 1997-10-28 2002-11-26 3M Innovative Properties Company Reflective LCD projection system using wide-angle Cartesian polarizing beam splitter
US5940149A (en) 1997-12-11 1999-08-17 Minnesota Mining And Manufacturing Company Planar polarizer for LCD projectors
US6864861B2 (en) 1997-12-31 2005-03-08 Brillian Corporation Image generator having a miniature display device
US6049419A (en) * 1998-01-13 2000-04-11 3M Innovative Properties Co Multilayer infrared reflecting optical body
US6531230B1 (en) * 1998-01-13 2003-03-11 3M Innovative Properties Company Color shifting film
US6053795A (en) * 1998-01-13 2000-04-25 3M Innovative Properties Company Toy having image mode and changed image mode
US6179948B1 (en) * 1998-01-13 2001-01-30 3M Innovative Properties Company Optical film and process for manufacture thereof
WO1999036262A2 (en) * 1998-01-13 1999-07-22 Minnesota Mining And Manufacturing Company Modified copolyesters and improved multilayer reflective films
US6012820A (en) * 1998-01-13 2000-01-11 3M Innovative Properties Compnay Lighted hand-holdable novelty article
BR9906910A (en) 1998-01-13 2000-10-10 Minnesota Mining & Mfg Feeding block for making a multilayer optical film, and process for making a multilayer optical film
US6045894A (en) * 1998-01-13 2000-04-04 3M Innovative Properties Company Clear to colored security film
US6024455A (en) * 1998-01-13 2000-02-15 3M Innovative Properties Company Reflective article with concealed retroreflective pattern
US6207260B1 (en) * 1998-01-13 2001-03-27 3M Innovative Properties Company Multicomponent optical body
US6108131A (en) 1998-05-14 2000-08-22 Moxtek Polarizer apparatus for producing a generally polarized beam of light
US6208466B1 (en) * 1998-11-25 2001-03-27 3M Innovative Properties Company Multilayer reflector with selective transmission
US6455140B1 (en) * 1999-01-13 2002-09-24 3M Innovative Properties Company Visible mirror film glitter
US6515785B1 (en) * 1999-04-22 2003-02-04 3M Innovative Properties Company Optical devices using reflecting polarizing materials
US20030008144A1 (en) * 2000-07-05 2003-01-09 3M Innovative Properties Company Color shifting film glitter
US6672721B2 (en) * 2001-06-11 2004-01-06 3M Innovative Properties Company Projection system having low astigmatism
US7094461B2 (en) * 2002-12-31 2006-08-22 3M Innovative Properties Company P-polarizer with large z-axis refractive index difference

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US5962114A (en) 1999-10-05
US6296927B1 (en) 2001-10-02
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US20020061393A1 (en) 2002-05-23
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US7297393B2 (en) 2007-11-20
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US20040043205A1 (en) 2004-03-04
US6635337B2 (en) 2003-10-21
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US6117530A (en) 2000-09-12
US7083847B2 (en) 2006-08-01

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