CA2199722A1 - Luminance control film - Google Patents

Luminance control film

Info

Publication number
CA2199722A1
CA2199722A1 CA002199722A CA2199722A CA2199722A1 CA 2199722 A1 CA2199722 A1 CA 2199722A1 CA 002199722 A CA002199722 A CA 002199722A CA 2199722 A CA2199722 A CA 2199722A CA 2199722 A1 CA2199722 A1 CA 2199722A1
Authority
CA
Canada
Prior art keywords
control film
luminance control
optical structures
scattering
wavelength
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.)
Granted
Application number
CA002199722A
Other languages
French (fr)
Other versions
CA2199722C (en
Inventor
Mark E. Gardiner
Mark B. O'neill
David L. Wortman
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
Mark E. Gardiner
Mark B. O'neill
David L. Wortman
Minnesota Mining And Manufacturing Company
The Minnesota Mining & Manufacturing Company
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 Mark E. Gardiner, Mark B. O'neill, David L. Wortman, Minnesota Mining And Manufacturing Company, The Minnesota Mining & Manufacturing Company filed Critical Mark E. Gardiner
Publication of CA2199722A1 publication Critical patent/CA2199722A1/en
Application granted granted Critical
Publication of CA2199722C publication Critical patent/CA2199722C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1809—Diffraction gratings with pitch less than or comparable to the wavelength
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/008—Surface plasmon devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Abstract

The luminance control film includes a periodic array of optical structures which are small with respect to the wavelength of light.
Scattering and diffractive effects result in improved off-axis illumination intensity in comparison with brightness enhancement optical devices having larger scale optical structures.
CA002199722A 1994-09-27 1995-09-07 Luminance control film Expired - Fee Related CA2199722C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US31272094A 1994-09-27 1994-09-27
US08/312,720 1994-09-27
PCT/US1995/011306 WO1996010148A1 (en) 1994-09-27 1995-09-07 Luminance control film

Publications (2)

Publication Number Publication Date
CA2199722A1 true CA2199722A1 (en) 1996-04-04
CA2199722C CA2199722C (en) 2006-01-31

Family

ID=23212701

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002199722A Expired - Fee Related CA2199722C (en) 1994-09-27 1995-09-07 Luminance control film

Country Status (9)

Country Link
US (1) US6091547A (en)
EP (2) EP0942227B1 (en)
JP (1) JPH10506500A (en)
KR (1) KR100451602B1 (en)
AU (1) AU3547095A (en)
CA (1) CA2199722C (en)
DE (2) DE69513992T2 (en)
ES (1) ES2139937T3 (en)
WO (1) WO1996010148A1 (en)

Families Citing this family (108)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6206525B1 (en) 1994-09-28 2001-03-27 Reflexite Corporation Miniature micro prism retroreflector
US6712481B2 (en) * 1995-06-27 2004-03-30 Solid State Opto Limited Light emitting panel assemblies
US5613751A (en) * 1995-06-27 1997-03-25 Lumitex, Inc. Light emitting panel assemblies
US7108414B2 (en) * 1995-06-27 2006-09-19 Solid State Opto Limited Light emitting panel assemblies
JP3653308B2 (en) * 1995-08-01 2005-05-25 日東樹脂工業株式会社 Surface light source device and liquid crystal display
US5895115A (en) * 1996-01-16 1999-04-20 Lumitex, Inc. Light emitting panel assemblies for use in automotive applications and the like
DE19731142B4 (en) * 1997-07-18 2004-05-13 Kaul, Sabine Lichtverteilstruktur
AU9487298A (en) * 1997-09-19 1999-04-12 Colorado Microdisplay, Inc. Method and apparatus for illuminating a display device
US6036322A (en) * 1997-12-01 2000-03-14 Reflexite Corporation Multi-orientation retroreflective structure
JP4042829B2 (en) * 1998-04-01 2008-02-06 矢崎総業株式会社 Liquid crystal display
US6752505B2 (en) 1999-02-23 2004-06-22 Solid State Opto Limited Light redirecting films and film systems
US7364341B2 (en) * 1999-02-23 2008-04-29 Solid State Opto Limited Light redirecting films including non-interlockable optical elements
US6827456B2 (en) * 1999-02-23 2004-12-07 Solid State Opto Limited Transreflectors, transreflector systems and displays and methods of making transreflectors
ES2202127T3 (en) * 1999-05-20 2004-04-01 Zumtobel Staff Gmbh LAMP.
JP2001133764A (en) * 1999-11-02 2001-05-18 Seiko Instruments Inc Liquid crystal display device
US6570710B1 (en) 1999-11-12 2003-05-27 Reflexite Corporation Subwavelength optical microstructure light collimating films
US6356389B1 (en) 1999-11-12 2002-03-12 Reflexite Corporation Subwavelength optical microstructure light collimating films
US6880946B2 (en) 2002-01-15 2005-04-19 Reflexite Corporation Grooved optical microstructure light collimating films
US20030206256A1 (en) * 2002-05-06 2003-11-06 Drain Kieran F. Display device with backlight
US7180672B2 (en) * 2002-05-20 2007-02-20 General Electric Company Optical substrate and method of making
US7859759B2 (en) * 2002-05-20 2010-12-28 Sabic Innovative Plastics Ip B.V. Film, backlight displays, and methods for making the same
US6862141B2 (en) 2002-05-20 2005-03-01 General Electric Company Optical substrate and method of making
US7624783B2 (en) * 2006-07-12 2009-12-01 Sensenig Luke G Curtain system for domestic animal shelter
US7010212B2 (en) * 2002-05-28 2006-03-07 3M Innovative Properties Company Multifunctional optical assembly
US6811274B2 (en) * 2002-12-04 2004-11-02 General Electric Company Polarization sensitive optical substrate
US7125131B2 (en) * 2002-12-06 2006-10-24 General Electric Company Brightness enhancement film with improved view angle
US6952627B2 (en) * 2002-12-18 2005-10-04 General Electric Company Method and apparatus for fabricating light management substrates
US20060056031A1 (en) * 2004-09-10 2006-03-16 Capaldo Kevin P Brightness enhancement film, and methods of making and using the same
JP4265602B2 (en) 2003-05-07 2009-05-20 日立化成工業株式会社 Hologram optical element and surface light source device using the same
US20060176421A1 (en) * 2003-06-13 2006-08-10 Tetsuya Utsumi El device, process for manufacturing the same, and liquid crystal display employing el device
KR100538227B1 (en) * 2003-07-26 2005-12-21 삼성전자주식회사 Method of removing Moire pattern in 3D image displaying apparatus using complete parallax
KR100717499B1 (en) * 2003-11-12 2007-05-14 엘지전자 주식회사 Prism sheet, back light assembly and display device
US7072092B2 (en) * 2003-12-31 2006-07-04 General Electric Company Optical substrate with modulated structure
KR100730113B1 (en) * 2004-04-03 2007-06-19 삼성에스디아이 주식회사 Flat panel display
US7688511B2 (en) 2004-07-23 2010-03-30 Hitachi Chemical Company, Ltd. Diffraction type light-condensing film and planar light source device using the same
US7203569B2 (en) * 2004-08-31 2007-04-10 General Electric Company Machine tool control methods and designs for fabricating mesoscopic surface structures on substrates
US7341784B2 (en) * 2004-09-10 2008-03-11 General Electric Company Light management film and its preparation and use
EP1797595B1 (en) * 2004-09-30 2019-12-18 Koninklijke Philips N.V. Brightness enhancement of led using selective ray angular recycling
JP5102623B2 (en) 2004-11-04 2012-12-19 ランバス・インターナショナル・リミテッド Long curved wedges in optical films
GB0427607D0 (en) * 2004-12-16 2005-01-19 Microsharp Corp Ltd Structured optical film
CN101487948B (en) 2005-01-31 2011-04-13 凸版印刷株式会社 Optical sheet, and backlight unit and display using the same
EP1877696A1 (en) * 2005-03-12 2008-01-16 3M Innovative Properties Company Illumination device and methods for making the same
TWI255924B (en) * 2005-03-16 2006-06-01 Au Optronics Corp Backlight module and brightness enhancement film thereof
TWI264578B (en) * 2005-04-22 2006-10-21 Ind Tech Res Inst Microstructure light modulation element and device
TWI351550B (en) * 2005-06-09 2011-11-01 Ubright Optronics Corp Optical substrate
US7248411B2 (en) * 2005-06-24 2007-07-24 Industrial Technology Research Institute Optical film with array of microstructures and the light source apparatus utilizing the same
TWI274215B (en) * 2005-08-10 2007-02-21 Ind Tech Res Inst Direct type backlight module
CN100443987C (en) * 2005-08-31 2008-12-17 财团法人工业技术研究院 Curvilinear optical modulation component and backlight module with same
WO2007027759A2 (en) * 2005-09-02 2007-03-08 Colorlink, Inc. Polarization beam splitter and combiner
US20070058391A1 (en) * 2005-09-14 2007-03-15 Wilson Randall H Light extraction layer
CN101268303A (en) * 2005-10-28 2008-09-17 日立麦克赛尔株式会社 Backlight device, display device and optical member
US7777832B2 (en) * 2005-11-18 2010-08-17 3M Innovative Properties Company Multi-function enhancement film
WO2007067692A1 (en) * 2005-12-06 2007-06-14 Ubright Optronics Corporation Luminance enhancement optical substrates with anti-chatter structures
US7548371B2 (en) * 2005-12-13 2009-06-16 Sharp Kabushiki Kaisha Optical film, illuminator and display
CN100454043C (en) * 2005-12-16 2009-01-21 群康科技(深圳)有限公司 Brightening film, light-negative mould set and liquid-crystal display mould set
US7366393B2 (en) * 2006-01-13 2008-04-29 Optical Research Associates Light enhancing structures with three or more arrays of elongate features
US7866871B2 (en) * 2006-01-13 2011-01-11 Avery Dennison Corporation Light enhancing structures with a plurality of arrays of elongate features
US20070086207A1 (en) * 2006-01-13 2007-04-19 Optical Research Associates Display systems including light enhancing structures with arrays of elongate features
US7674028B2 (en) * 2006-01-13 2010-03-09 Avery Dennison Corporation Light enhancing structures with multiple arrays of elongate features of varying characteristics
US7545569B2 (en) 2006-01-13 2009-06-09 Avery Dennison Corporation Optical apparatus with flipped compound prism structures
JP4923671B2 (en) 2006-03-29 2012-04-25 ソニー株式会社 Liquid crystal display
JP4764230B2 (en) * 2006-03-31 2011-08-31 キヤノン株式会社 Display device
KR20070109134A (en) 2006-05-09 2007-11-15 엘지전자 주식회사 Prism sheet, back light unit and liquid crystal display having the same
CN100456053C (en) * 2006-05-29 2009-01-28 开曼群岛商亚岗科技股份有限公司 Multiple field optical film capable of improving multiple items performance and manufacturing method therefor
CN101140959A (en) * 2006-06-12 2008-03-12 颜博文 Optoelectronic device
CN101517465B (en) * 2006-06-30 2014-07-16 友辉光电股份有限公司 Luminance enhancement optical substrates with optical defect masking structures
EP2049365B1 (en) 2006-08-01 2017-12-13 3M Innovative Properties Company Illumination device
WO2008025765A1 (en) * 2006-09-01 2008-03-06 Seereal Technologies S.A. Direction-controlled illumination unit for an autostereoscopic display
US8525402B2 (en) 2006-09-11 2013-09-03 3M Innovative Properties Company Illumination devices and methods for making the same
US8581393B2 (en) * 2006-09-21 2013-11-12 3M Innovative Properties Company Thermally conductive LED assembly
US20080101759A1 (en) 2006-10-26 2008-05-01 K Laser Technology, Inc. Prism matrix with random phase structures
US20080129930A1 (en) * 2006-12-01 2008-06-05 Agoura Technologies Reflective polarizer configuration for liquid crystal displays
JP2008145551A (en) * 2006-12-06 2008-06-26 Sony Corp Display device
KR101361886B1 (en) * 2006-12-13 2014-02-12 엘지디스플레이 주식회사 Optical plate, backlight assembly having the same, and the liquid crystal display device
JP4910842B2 (en) * 2007-04-02 2012-04-04 ソニー株式会社 Optical sheet and display device
US8368839B2 (en) 2007-05-31 2013-02-05 Hitachi Maxell, Ltd. Optical adjusting member and illumination device and liquid crystal display device including the same
US20080295327A1 (en) * 2007-06-01 2008-12-04 3M Innovative Properties Company Flexible circuit
TW200907417A (en) * 2007-08-15 2009-02-16 Delta Electronics Inc Backlight module and optical film thereof
US7621677B2 (en) * 2007-08-21 2009-11-24 Ylx Corp. Optical coupler for a light emitting device with enhanced output brightness
KR101376245B1 (en) * 2007-08-28 2014-03-21 엘지디스플레이 주식회사 Backlight unit for liquid crystal display device
JP2009080214A (en) * 2007-09-25 2009-04-16 Toshiba Corp Liquid crystal display device
GB2455057A (en) 2007-10-08 2009-06-03 Sharp Kk Prismatic curved sheet optical device for use in a curved display
DE102007059732B4 (en) * 2007-12-12 2020-11-12 Pictiva Displays International Limited Light emitting device
KR101579332B1 (en) * 2008-02-15 2015-12-21 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Brightness enhancing film and film based diffuser for improved illumination uniformity of displays
US20100046103A1 (en) * 2008-08-21 2010-02-25 Iteq Corporation Brightness enhancement component
CN102472841A (en) * 2009-07-08 2012-05-23 住友化学株式会社 Light diffusion film and liquid crystal display device comprising same
JP5529512B2 (en) 2009-07-23 2014-06-25 富士フイルム株式会社 VA liquid crystal display device
JP5434403B2 (en) * 2009-09-07 2014-03-05 凸版印刷株式会社 Illumination unit and display device
TW201115231A (en) 2009-10-28 2011-05-01 Coretronic Corp Backlight module
TW201116896A (en) * 2009-11-03 2011-05-16 Wintek Corp Light emitting module
KR20110051587A (en) * 2009-11-10 2011-05-18 삼성전자주식회사 Optical plate and method of manufacturing the same
US9140831B2 (en) 2010-09-16 2015-09-22 Dai Nippon Printing Co., Ltd. Optical sheet, optical member, surface light source device, and liquid crystal display device
CN103154782B (en) * 2010-10-28 2015-09-30 皇家飞利浦电子股份有限公司 Illumination apparatus, luminaire and illuminator
EP2633343B1 (en) 2010-10-28 2018-06-13 Philips Lighting Holding B.V. Collimator comprising a prismatic layer stack, and lighting unit comprising such collimator
EP2671141B1 (en) 2011-02-02 2016-05-25 FlatFrog Laboratories AB Optical incoupling for touch-sensitive systems
WO2012114267A1 (en) 2011-02-22 2012-08-30 Koninklijke Philips Electronics N.V. Collimator comprising a prismatic layer stack, and lighting unit comprising such a collimator
JP6002480B2 (en) * 2012-07-06 2016-10-05 株式会社日立ハイテクノロジーズ Overlay error measuring device and computer program for causing computer to execute pattern measurement
USD735400S1 (en) * 2013-02-09 2015-07-28 SVV Technology Innovations, Inc Optical lens array lightguide plate
KR20150012520A (en) * 2013-07-25 2015-02-04 삼성디스플레이 주식회사 Organic light emitting display and manufacturing method thereof
CN104422976A (en) * 2013-08-21 2015-03-18 上海友浦塑胶有限公司 Composite high-gain brightness enhancement film group
US10001587B2 (en) 2015-03-27 2018-06-19 3M Innovative Properties Company Brightness enhancement film
CN104713031A (en) * 2015-03-27 2015-06-17 京东方科技集团股份有限公司 Composite prism unit, backlight module and display device
JP2015143879A (en) * 2015-04-03 2015-08-06 大日本印刷株式会社 Optical sheet, face light source device, and liquid crystal display apparatus
EP3457182B1 (en) * 2016-07-08 2020-11-04 Huawei Technologies Co., Ltd. Film applied in display screen, display screen, and terminal
CN106680916A (en) * 2016-12-02 2017-05-17 乐视控股（北京）有限公司 Composite prismatic lens, backlight module and display terminal
KR20200101722A (en) * 2019-02-20 2020-08-28 코닝 인코포레이티드 Optical structures for light emitting diode device and light emitting diode device for lighting having the same
JP2023512682A (en) 2020-02-10 2023-03-28 フラットフロッグ ラボラトリーズ アーベー Improved touch detector
CN113448121A (en) * 2020-03-27 2021-09-28 群创光电股份有限公司 Backlight module and display device

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2124139A (en) * 1933-11-08 1938-07-19 Ig Farbenindustrie Ag Apparatus for projecting lenticular film
US3349238A (en) * 1964-12-31 1967-10-24 Smithcraft Corp Glare-free office lighting device and the like
DE3106539C2 (en) * 1980-02-22 1994-09-01 Ricoh Kk Grid lens
US4542449A (en) * 1983-08-29 1985-09-17 Canadian Patents & Development Limited Lighting panel with opposed 45° corrugations
US4615579A (en) * 1983-08-29 1986-10-07 Canadian Patents & Development Ltd. Prism light guide luminaire
US4729640A (en) * 1984-10-03 1988-03-08 Canon Kabushiki Kaisha Liquid crystal light modulation device
US4805984A (en) * 1985-11-21 1989-02-21 Minnesota Mining And Manufacturing Company Totally internally reflecting light conduit
CA1279783C (en) * 1985-11-21 1991-02-05 Minnesota Mining And Manufacturing Company Totally internally reflecting thin, flexible film
US5056892A (en) * 1985-11-21 1991-10-15 Minnesota Mining And Manufacturing Company Totally internally reflecting thin, flexible film
US4791540A (en) * 1987-05-26 1988-12-13 Minnesota Mining And Manufacturing Company Light fixture providing normalized output
CA1312320C (en) * 1987-11-12 1993-01-05 Makoto Oe Plane light source unit
US5054885A (en) * 1988-10-11 1991-10-08 Minnesota Mining And Manfuacturing Company Light fixture including a partially collimated beam of light and reflective prisms having peaks lying on a curved surface
US5161041A (en) * 1990-04-26 1992-11-03 Ois Optical Imaging Systems, Inc. Lighting assembly for a backlit electronic display including an integral image splitting and collimating means
US5262880A (en) * 1990-04-26 1993-11-16 Ois Optical Imaging Systems, Inc. Night vision goggle compatible liquid crystal display device
JPH04356015A (en) * 1991-03-22 1992-12-09 Tosoh Corp Back light
US5471344A (en) * 1991-03-29 1995-11-28 Canon Kabushiki Kaisha Photographing apparatus having optical low-pass filter
JPH04309901A (en) * 1991-04-08 1992-11-02 Seiko Epson Corp Diffraction grating and hologram pickup using the same
JP2973243B2 (en) * 1991-04-17 1999-11-08 セイコーエプソン株式会社 Polarization separating means, light source device and projection display device using the same
EP0591386B1 (en) * 1991-06-25 1998-11-25 Alm Medical device for lighting a treatment field
DE69220870T2 (en) * 1991-08-22 1998-02-05 Tosoh Corp Rear lighting device
EP0531939B1 (en) * 1991-09-09 1999-12-29 Enplas Corporation Surface light source device
JP3228537B2 (en) * 1991-10-09 2001-11-12 東ソー株式会社 Backlight
US5394255A (en) * 1992-01-27 1995-02-28 Sekisui Kagaku Kogyo Kabushiki Kaisha Liquid crystal display using a plurality of light adjusting sheets angled at 5 degrees or more
US5303322A (en) * 1992-03-23 1994-04-12 Nioptics Corporation Tapered multilayer luminaire devices
CA2097109C (en) * 1992-06-01 2000-01-11 Shozo Kokawa Liquid crystal display
JPH0618873A (en) * 1992-07-01 1994-01-28 Fujitsu Ltd Liquid crystal display device
US5280371A (en) * 1992-07-09 1994-01-18 Honeywell Inc. Directional diffuser for a liquid crystal display
JP3006306B2 (en) * 1992-09-16 2000-02-07 インターナショナル・ビジネス・マシーンズ・コーポレイション Optical film and liquid crystal display device using the optical film
TW594115B (en) * 1992-10-09 2004-06-21 Asahi Glass Co Ltd A liquid crystal display device and an illumination device for a direct viewing type display element
JPH06153190A (en) * 1992-11-04 1994-05-31 Nippon Philips Kk Picture display/image pickup device
JPH06148620A (en) * 1992-11-06 1994-05-27 Asahi Glass Co Ltd Transmission and scattering type optical device with coloring prism
US5363240A (en) * 1992-11-13 1994-11-08 Ricoh Company, Ltd. Image forming device and method for producing it
US5333072A (en) * 1992-12-31 1994-07-26 Minnesota Mining And Manufacturing Company Reflective liquid crystal display overhead projection system using a reflective linear polarizer and a fresnel lens
JPH06222207A (en) * 1993-01-26 1994-08-12 Dainippon Printing Co Ltd Optical sheet, surface light source, and display device
US5448649A (en) * 1994-05-24 1995-09-05 Chen; Wang S. Apparatus for imaging fingerprint or topographic relief pattern on the surface of an object
US5591527A (en) * 1994-11-02 1997-01-07 Minnesota Mining And Manufacturing Company Optical security articles and methods for making same

Also Published As

Publication number Publication date
WO1996010148A1 (en) 1996-04-04
US6091547A (en) 2000-07-18
DE69532771T2 (en) 2004-09-30
DE69513992T2 (en) 2000-07-27
EP0942227A1 (en) 1999-09-15
KR970706467A (en) 1997-11-03
DE69513992D1 (en) 2000-01-20
EP0783648A1 (en) 1997-07-16
EP0942227B1 (en) 2004-03-24
EP0783648B1 (en) 1999-12-15
ES2139937T3 (en) 2000-02-16
AU3547095A (en) 1996-04-19
JPH10506500A (en) 1998-06-23
DE69532771D1 (en) 2004-04-29
KR100451602B1 (en) 2004-12-17
CA2199722C (en) 2006-01-31

Similar Documents

Publication Publication Date Title
CA2199722A1 (en) Luminance control film
EP0729057A3 (en) Coherent white light source and optical devices therewith
US5174649B1 (en) Led lamp including refractive lens element
CA2227564A1 (en) Electroluminescent lamp using multilayer optical film
CA2413700A1 (en) Backlight with structured sufaces
CA2173336A1 (en) Light source for backlighting
CA2247625A1 (en) Display brightness enhancement film
AU5530296A (en) Collimating tir lens devices employing fluorescent light sou rces
GB2304230B (en) Transparent substrate light emitting diodes with directed light output
CA2327247A1 (en) Illumination device for non-emissive displays
DE69613426D1 (en) Initiator for visible radiation and composition polymerizable with visible light
CA2162236A1 (en) Lighting Fixtures
ATE19309T1 (en) LIGHTING DEVICE WITH A BUNDLE LIGHT GUIDE.
FR2734902B1 (en) LIGHT INTENSITY CONTROL DEVICE
AU5771094A (en) Ambient condition detector with high intensity strobe light
WO2002025356A3 (en) Mechanical deformation based on optical illumination
DE69414457D1 (en) Ultraviolet light resistant anti-reflective coating
DE69406732T2 (en) Illumination lamp with double light focus
ITTO920270A1 (en) INSTRUMENT PANEL WITH COLOR VARIATION AND LIGHT INTENSITY
GB2276032B (en) High intensity light source
FR2736732B1 (en) STABILIZED WIDE SPECTRUM LIGHT SOURCE
DE69610963D1 (en) Component with containing light source
DE29520700U1 (en) Color light module
AU4377593A (en) Specific intensity distribution light reflector
DE69623701D1 (en) Spatial light modulator with improved peak white output

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed