CA2236804A1 - High light diffusive and low light absorbent material and method for making and using same - Google Patents

High light diffusive and low light absorbent material and method for making and using same

Info

Publication number
CA2236804A1
CA2236804A1 CA002236804A CA2236804A CA2236804A1 CA 2236804 A1 CA2236804 A1 CA 2236804A1 CA 002236804 A CA002236804 A CA 002236804A CA 2236804 A CA2236804 A CA 2236804A CA 2236804 A1 CA2236804 A1 CA 2236804A1
Authority
CA
Canada
Prior art keywords
present
light
diffuse
making
same
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
CA002236804A
Other languages
French (fr)
Other versions
CA2236804C (en
Inventor
Gregory E. Hannon
Gordon L. Mcgregor
Raymond B. Minor
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.)
WL Gore and Associates Inc
Original Assignee
Gregory E. Hannon
Gordon L. Mcgregor
Raymond B. Minor
W.L. Gore & Associates, Inc.
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 Gregory E. Hannon, Gordon L. Mcgregor, Raymond B. Minor, W.L. Gore & Associates, Inc. filed Critical Gregory E. Hannon
Publication of CA2236804A1 publication Critical patent/CA2236804A1/en
Application granted granted Critical
Publication of CA2236804C publication Critical patent/CA2236804C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0247—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of voids or pores
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0289—Diffusing elements; Afocal elements characterized by the use used as a transflector
    • 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
    • G02F1/133553—Reflecting elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements

Abstract

The present invention is an improved material and method for use for providing diffuse transflectance of light. By employing an expanded polytetrafluoroethylene (PTFE) comprising a microstructure of polymeric nodes and fibrils, the material of the present invention demonstrates exceptional diffuse reflectivity and transmission of light across a wide spectrum of ultraviolet, visible, and infrared light. Additionally, the material of the present invention provides many properties that have been previously unavailable in highly diffuse transflective material, including a high degree of malleability, moldability and flexibility, and effective reflectivity even at relatively thin cross sections.
CA002236804A 1995-11-27 1996-09-23 High light diffusive and low light absorbent material and method for making and using same Expired - Lifetime CA2236804C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/562,651 US5781342A (en) 1995-01-06 1995-11-27 High light diffusive and low light absorbent material and method for making and using same
US08/562,651 1995-11-27
PCT/US1996/015111 WO1997020238A1 (en) 1995-11-27 1996-09-23 High light diffusive and low light absorbent material and method for making and using same

Publications (2)

Publication Number Publication Date
CA2236804A1 true CA2236804A1 (en) 1997-06-05
CA2236804C CA2236804C (en) 2001-07-31

Family

ID=24247171

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002236804A Expired - Lifetime CA2236804C (en) 1995-11-27 1996-09-23 High light diffusive and low light absorbent material and method for making and using same

Country Status (8)

Country Link
US (1) US5781342A (en)
EP (1) EP0864108B1 (en)
JP (1) JP4260884B2 (en)
AU (1) AU694381B2 (en)
CA (1) CA2236804C (en)
DE (1) DE69625511T2 (en)
NO (1) NO320565B1 (en)
WO (1) WO1997020238A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5982542A (en) * 1995-01-06 1999-11-09 W. L. Gore & Associates, Inc. High light diffusive and low light absorbent material and method for making and using same
US6015610A (en) * 1995-01-06 2000-01-18 W. L. Gore & Associates, Inc. Very thin highly light reflectant surface and method for making and using same
US6177153B1 (en) * 1996-08-05 2001-01-23 Teijin Limited Orientated film having pores
US5976686A (en) * 1997-10-24 1999-11-02 3M Innovative Properties Company Diffuse reflective articles
US6473220B1 (en) * 1998-01-22 2002-10-29 Trivium Technologies, Inc. Film having transmissive and reflective properties
US6243068B1 (en) 1998-05-29 2001-06-05 Silicon Graphics, Inc. Liquid crystal flat panel display with enhanced backlight brightness and specially selected light sources
FR2802692B1 (en) * 1999-12-17 2003-05-16 Thomson Csf Sextant LIGHTING DEVICE FOR A LIQUID CRYSTAL SCREEN
AU2000226369B2 (en) * 2000-02-02 2006-01-19 Brilliant Film, Llc Multiflecting light directing film
US7345824B2 (en) * 2002-03-26 2008-03-18 Trivium Technologies, Inc. Light collimating device
US7595934B2 (en) 2002-03-26 2009-09-29 Brilliant Film Llc Integrated sub-assembly having a light collimating or transflecting device
KR100884697B1 (en) * 2002-08-02 2009-03-05 트리비움 테크놀로지스 인코퍼레이티드 Multiflecting light directing film
JP4089371B2 (en) * 2002-09-24 2008-05-28 セイコーエプソン株式会社 Transmissive screen and rear projector
WO2004104677A2 (en) * 2003-05-20 2004-12-02 Trivium Technologies, Inc. Devices for use in non-emissive displays
US20050136200A1 (en) * 2003-12-19 2005-06-23 Durell Christopher N. Diffuse high reflectance film
JP4967274B2 (en) * 2004-08-06 2012-07-04 東レ株式会社 Light reflecting film and surface light source using the same
JP4714310B2 (en) * 2004-08-31 2011-06-29 スターライト工業株式会社 Non-melt processable fluororesin
US7482572B1 (en) * 2005-07-25 2009-01-27 Itt Manufacturing Enterprises, Inc. Transmissive diffuser with a layer of polytetrafluoroethylene on the output surface for use with an on-orbit radiometric calibration
DE102005042220A1 (en) * 2005-09-05 2007-03-15 Röhm Gmbh Arrangement for the back projection of radiation, method for the preparation of the arrangement and use of a rear projection medium
US7868287B2 (en) * 2006-08-30 2011-01-11 The Texas A&M University System Highly diffuse reflector
US7468519B2 (en) * 2006-12-05 2008-12-23 The Boeing Company Near infrared light diffuser
TW200946775A (en) * 2008-02-27 2009-11-16 Brilliant Film Llc Concentrators for solar power generating systems
US8854734B2 (en) * 2009-11-12 2014-10-07 Vela Technologies, Inc. Integrating optical system and methods
US8426800B2 (en) 2010-09-09 2013-04-23 Vela Technologies, Inc. Integrating optical systems and methods
US9364071B2 (en) * 2013-09-19 2016-06-14 Spectral Sensors Inc. Systems and methods for measuring spectra of skin and other objects and materials and making predictions based thereon
JP6045536B2 (en) * 2014-08-01 2016-12-14 富士フイルム株式会社 Endoscope device
US10180394B2 (en) 2014-11-06 2019-01-15 Board Of Regents, The University Of Texas System Systems and methods for performing cavity-enhanced absorption spectroscopy
KR20170028191A (en) * 2015-09-03 2017-03-13 삼성전자주식회사 Filtering apparatus and display device comprising the same
CN107942422B (en) * 2018-01-16 2022-02-08 北京睿智航显示科技有限公司 Diffusion sheet, backlight module and double-sided display device
WO2021108636A1 (en) 2019-11-25 2021-06-03 W. L. Gore & Associates, Inc. Solar albedo reflector tracker system and reflector film

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CA962021A (en) * 1970-05-21 1975-02-04 Robert W. Gore Porous products and process therefor
US3962153A (en) * 1970-05-21 1976-06-08 W. L. Gore & Associates, Inc. Very highly stretched polytetrafluoroethylene and process therefor
US4035085A (en) * 1973-06-29 1977-07-12 Ppg Industries, Inc. Method and apparatus for comparing light reflectance of a sample against a standard
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Also Published As

Publication number Publication date
NO982379L (en) 1998-07-27
AU694381B2 (en) 1998-07-16
CA2236804C (en) 2001-07-31
JP4260884B2 (en) 2009-04-30
AU7163396A (en) 1997-06-19
DE69625511T2 (en) 2003-09-11
WO1997020238A1 (en) 1997-06-05
DE69625511D1 (en) 2003-01-30
US5781342A (en) 1998-07-14
JP2000503126A (en) 2000-03-14
EP0864108B1 (en) 2002-12-18
NO320565B1 (en) 2005-12-19
NO982379D0 (en) 1998-05-26
EP0864108A1 (en) 1998-09-16

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Legal Events

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EEER Examination request
MKEX Expiry

Effective date: 20160923