DE69228655D1 - Flächige Beleuchtungsvorrichtung und mit solcher Vorrichtung versehenes Anzeigegerät - Google Patents

Flächige Beleuchtungsvorrichtung und mit solcher Vorrichtung versehenes Anzeigegerät

Info

Publication number
DE69228655D1
DE69228655D1 DE69228655T DE69228655T DE69228655D1 DE 69228655 D1 DE69228655 D1 DE 69228655D1 DE 69228655 T DE69228655 T DE 69228655T DE 69228655 T DE69228655 T DE 69228655T DE 69228655 D1 DE69228655 D1 DE 69228655D1
Authority
DE
Germany
Prior art keywords
flat lighting
lighting device
display device
display
light guide
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.)
Expired - Fee Related
Application number
DE69228655T
Other languages
English (en)
Other versions
DE69228655T2 (de
Inventor
Toshiyuki Kanda
Hisao Tajima
Hiroshi Takabayashi
Takashi Yamamoto
Hideo Mori
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.)
Canon Inc
Original Assignee
Canon 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
Priority claimed from JP3348565A external-priority patent/JP3023026B2/ja
Priority claimed from JP4151225A external-priority patent/JPH05323316A/ja
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE69228655D1 publication Critical patent/DE69228655D1/de
Publication of DE69228655T2 publication Critical patent/DE69228655T2/de
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
    • G02B6/0051—Diffusing sheet or layer
    • 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
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/007—Incandescent lamp or gas discharge lamp
    • G02B6/0071—Incandescent lamp or gas discharge lamp with elongated shape, e.g. tube
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0409—Arrangements for homogeneous illumination of the display surface, e.g. using a layer having a non-uniform transparency
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
    • 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
    • G02B6/0045—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 by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • 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
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418—Constructional details
    • G09F13/0454—Slidable panels or parts
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/1804—Achieving homogeneous illumination
    • G09F2013/1827—Prismatic window
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/1804—Achieving homogeneous illumination
    • G09F2013/1831—Achieving homogeneous illumination using more than one light source
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S385/00—Optical waveguides
    • Y10S385/901—Illuminating or display apparatus
DE69228655T 1991-12-06 1992-12-04 Flächige Beleuchtungsvorrichtung und mit solcher Vorrichtung versehenes Anzeigegerät Expired - Fee Related DE69228655T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3348565A JP3023026B2 (ja) 1991-12-06 1991-12-06 面照明装置
JP4151225A JPH05323316A (ja) 1992-05-20 1992-05-20 バックライト装置

Publications (2)

Publication Number Publication Date
DE69228655D1 true DE69228655D1 (de) 1999-04-22
DE69228655T2 DE69228655T2 (de) 1999-10-21

Family

ID=26480539

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69228655T Expired - Fee Related DE69228655T2 (de) 1991-12-06 1992-12-04 Flächige Beleuchtungsvorrichtung und mit solcher Vorrichtung versehenes Anzeigegerät

Country Status (4)

Country Link
US (2) US5438484A (de)
EP (1) EP0545429B1 (de)
AT (1) ATE177832T1 (de)
DE (1) DE69228655T2 (de)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6426807B1 (en) 1993-01-19 2002-07-30 Canon Kabushiki Kaisha Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device
EP0607930B1 (de) * 1993-01-19 2008-11-19 Canon Kabushiki Kaisha Längliche Beleuchtungsvorrichtung und Informationsauslesevorrichtung, die eine solche Beleuchtungsvorrichtung aufweist
JPH06314069A (ja) 1993-03-03 1994-11-08 Fujitsu Ltd 照明装置
BE1007433A3 (nl) * 1993-07-30 1995-06-13 Philips Electronics Nv Platte beeldweergeefinrichting, belichtingsstelsel en stralingsbron geschikt voor toepassing in een dergelijke platte beeldweergeefinrichting.
JP2778659B2 (ja) * 1993-12-24 1998-07-23 キヤノン株式会社 導光体及び照明装置及び画像読取装置
JP3256625B2 (ja) * 1994-05-18 2002-02-12 三菱電機株式会社 液晶表示装置
JP3538220B2 (ja) * 1994-05-25 2004-06-14 株式会社エンプラス コーナー部光供給型面光源装置
US5796450A (en) * 1994-12-16 1998-08-18 Canon Kabushiki Kaisha Illumination device and liquid crystal display apparatus including same
TW344032B (en) * 1995-01-27 1998-11-01 Mitsui Toatsu Chemicals Light reflective sheet and light reflector using it
US5808707A (en) * 1995-03-01 1998-09-15 Canon Kabushiki Kaisha Display apparatus
US5808597A (en) * 1995-03-08 1998-09-15 Canon Kabushiki Kaisha Illumination device for liquid crystal display apparatus
US7108414B2 (en) 1995-06-27 2006-09-19 Solid State Opto Limited Light emitting panel assemblies
EP0802446B1 (de) * 1995-11-06 2003-06-11 Seiko Epson Corporation Beleuchtungsvorrichtung, flüssigkristallanzeige mit dieser beleuchtungsvorrichtung und elektronisches gerät
US5768096A (en) * 1996-10-30 1998-06-16 Hewlett-Packard Company Portable computer with movable display panels forming a concatenated display screen in response to opening the computer
KR100229615B1 (ko) * 1997-01-28 1999-11-15 구자홍 액정표시장치
JP3118699B2 (ja) * 1997-04-16 2000-12-18 日本航空電子工業株式会社 液晶用バックライトソケット
US6132053A (en) * 1997-06-17 2000-10-17 Baker Electronics, Inc. Optimized highly efficient large area modular flat panel display lighting device
US6089739A (en) * 1997-09-30 2000-07-18 Sony Corporation Surface light source device
US6099145A (en) * 1997-10-30 2000-08-08 Baker Electronics, Inc. Enhanced MTBF backlight system and related method
JP3297846B2 (ja) * 1998-03-05 2002-07-02 ミネベア株式会社 透過型面状照明装置
WO1999066355A2 (en) * 1998-06-19 1999-12-23 Fiberstars, Inc. Lighting fixture for fiber optics and method
JP3688915B2 (ja) * 1998-11-27 2005-08-31 株式会社 日立ディスプレイズ 液晶表示装置
JP3434465B2 (ja) * 1999-04-22 2003-08-11 三菱電機株式会社 液晶表示装置用バックライト
JP2001035233A (ja) * 1999-07-16 2001-02-09 Nippon Denyo 平面照明装置、液晶表示パネル、および液晶表示装置
KR100654220B1 (ko) * 1999-08-03 2006-12-05 삼성전자주식회사 액정표시장치
US6652128B2 (en) * 2001-01-31 2003-11-25 Textron Automotive Company, Inc. Backlighting method for an automotive trim panel
US6966684B2 (en) * 2001-09-13 2005-11-22 Gelcore, Llc Optical wave guide
KR20040000776A (ko) * 2002-06-25 2004-01-07 삼성전자주식회사 램프 고정 홀더 및 이를 갖는 백라이트 어셈블리
KR100783619B1 (ko) * 2002-06-29 2007-12-07 삼성전자주식회사 조명장치와 이를 갖는 백라이트 어셈블리 및 액정표시장치
JP4151834B2 (ja) * 2002-09-25 2008-09-17 シャープ株式会社 バックライトユニットおよび液晶表示装置
TWI252938B (en) * 2002-11-22 2006-04-11 Hon Hai Prec Ind Co Ltd Light guide plate and backlight system using the same
TW587708U (en) * 2002-12-17 2004-05-11 Hon Hai Prec Ind Co Ltd Large size light guide plate and surface lighting system using the same
JP4029743B2 (ja) * 2003-02-24 2008-01-09 ソニー株式会社 バックライト
KR100455177B1 (ko) * 2003-03-12 2004-11-06 엘지전자 주식회사 이동통신 단말기의 호출 오류 방지 방법
TW200417789A (en) * 2003-03-14 2004-09-16 Hon Hai Prec Ind Co Ltd Backlight module and diffuser plate used therein
TWI256502B (en) * 2003-03-28 2006-06-11 Hon Hai Prec Ind Co Ltd Backlight module and diffuser plate used therein
KR101094772B1 (ko) 2004-06-30 2011-12-16 엘지디스플레이 주식회사 타일형 표시장치
DE502005004788D1 (de) * 2004-10-20 2008-09-04 Airbus Gmbh Beleuchtungseinheit für Flugzeuge
TW200725093A (en) * 2005-12-23 2007-07-01 Innolux Display Corp Back light module
EP2012176A1 (de) * 2007-07-02 2009-01-07 Heesung Electronics Co., Ltd. Stromanschlussvorrichtung für eine Direkt-Rückbeleuchtungseinheit
CN101772671A (zh) * 2007-07-27 2010-07-07 夏普株式会社 照明装置和具备它的显示装置
US7672549B2 (en) * 2007-09-10 2010-03-02 Banyan Energy, Inc. Solar energy concentrator
WO2009035986A2 (en) * 2007-09-10 2009-03-19 Banyan Energy, Inc Compact optics for concentration, aggregation and illumination of light energy
US8705914B2 (en) 2007-09-10 2014-04-22 Banyan Energy, Inc. Redirecting optics for concentration and illumination systems
US8412010B2 (en) 2007-09-10 2013-04-02 Banyan Energy, Inc. Compact optics for concentration and illumination systems
TW200923269A (en) * 2007-11-23 2009-06-01 Foxsemicon Integrated Tech Inc Assembly of lamp panel module and its manufacturing method
JP5571885B2 (ja) * 2008-03-19 2014-08-13 三星ディスプレイ株式會社 液晶表示装置とその製造方法
JP5077052B2 (ja) * 2008-04-28 2012-11-21 富士通株式会社 携帯端末装置
JP4720869B2 (ja) 2008-08-01 2011-07-13 エプソンイメージングデバイス株式会社 バックライトユニット、電気光学装置及び電子機器
KR101493706B1 (ko) * 2008-12-24 2015-02-16 엘지디스플레이 주식회사 액정표시장치용 백라이트 유닛
KR101507739B1 (ko) * 2008-12-26 2015-04-08 삼성디스플레이 주식회사 액정 표시 장치와 그 제조 방법
US8646935B2 (en) * 2009-04-23 2014-02-11 POP Displays USA LLC Low voltage illumination grid assembly for retail display shelf system
WO2010131359A1 (ja) * 2009-05-15 2010-11-18 株式会社 東芝 映像表示装置
US8365053B2 (en) * 2009-05-27 2013-01-29 International Business Machines Corporation Encoding and decoding data using store and exclusive or operations
CN102472860B (zh) * 2009-07-09 2016-02-03 皇家飞利浦电子股份有限公司 自由形式照明模块
DE102011000702A1 (de) * 2011-02-14 2012-08-16 Hella Kgaa Hueck & Co. Rollfeldverkehrszeichen
KR101848719B1 (ko) * 2011-08-11 2018-04-16 삼성디스플레이 주식회사 백라이트 어셈블리
KR101299453B1 (ko) * 2011-09-19 2013-08-22 삼성전자주식회사 디스플레이장치
KR101948169B1 (ko) * 2011-12-23 2019-02-14 엘지디스플레이 주식회사 백라이트 유닛과 이를 이용한 액정표시장치
DE102012103512A1 (de) * 2012-04-20 2013-10-24 Osram Opto Semiconductors Gmbh Spiegelvorrichtung
KR102034890B1 (ko) * 2012-10-24 2019-10-22 삼성전자주식회사 곡면 디스플레이 장치
TWI599817B (zh) 2013-02-05 2017-09-21 鴻海精密工業股份有限公司 顯示裝置、拼接式顯示器及背光模組
CN103971600B (zh) * 2013-02-05 2017-02-15 鸿富锦精密工业（深圳）有限公司 显示元件、显示装置及拼接式显示器
CN105431768B (zh) 2013-08-02 2019-08-20 堺显示器制品株式会社 照明装置以及显示装置
US9857072B2 (en) * 2014-03-12 2018-01-02 American Heating Technologies Inc. Apparatuses, methods, and systems for illuminating panels used as cabinet doors and drawer panels
CN104021732B (zh) * 2014-05-22 2017-01-18 京东方科技集团股份有限公司 一种显示装置

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1371272A (en) * 1920-02-10 1921-03-15 Harvey M Strong Globe and fuse carrier
US2017597A (en) * 1935-05-14 1935-10-15 Neon Products Inc Electric sign
US2740735A (en) * 1953-05-18 1956-04-03 Chase Shawmut Co Method of forming contact structures of composite metals
US3154281A (en) * 1962-02-20 1964-10-27 Frank Charles Holder for electronic components
US4071883A (en) * 1976-09-28 1978-01-31 Juanita Dennis Multi-purpose laboratory light box
US4335421A (en) * 1980-03-17 1982-06-15 Modia Joseph W Light fixture, light aperture and method of uniformly illuminating an optically diffusive viewing area
JPS608481B2 (ja) * 1980-09-01 1985-03-04 松下電器産業株式会社 光ファイバ−の接続方法
EP0167721B1 (de) * 1984-07-02 1989-10-11 Mitsubishi Rayon Co., Ltd. Lichtdiffusor
DE3806421A1 (de) * 1987-03-04 1988-11-24 Citizen Watch Co Ltd Beleuchtungsvorrichtung fuer ein fluessigkristallanzeigegeraet
US4843458A (en) * 1987-06-05 1989-06-27 Ricoh Company, Ltd. Method of processing image information
JPH01107406A (ja) * 1987-10-20 1989-04-25 Chatani Sangyo Kk 面照明装置
JP2810053B2 (ja) * 1988-07-01 1998-10-15 株式会社日立製作所 光源装置および液晶表示装置
JP2595067B2 (ja) * 1988-08-18 1997-03-26 東ソー株式会社 液晶パネル用バックライト
US4974122A (en) * 1989-03-28 1990-11-27 Rockwell International Corporation Compact LCD luminaire
JPH0389301A (ja) * 1989-09-01 1991-04-15 Sky Alum Co Ltd 金属塗装反射板
US4957343A (en) * 1989-10-30 1990-09-18 The Furukawa Electric Co., Ltd. Method for splicing optical fibers having a plastic clad layer and an optical fiber suited for carrying out the method
JP2924055B2 (ja) * 1989-12-08 1999-07-26 セイコーエプソン株式会社 反射型液晶表示素子
US5150231A (en) * 1989-12-29 1992-09-22 Canon Kabushiki Kaisha Impact resistant ferroelectric liquid crystal apparatus
JP3176052B2 (ja) * 1990-04-27 2001-06-11 キヤノン株式会社 画像処理装置
WO1992004400A1 (en) * 1990-09-04 1992-03-19 Ohno Research And Development Laboratories Co., Ltd. Plastic optical member having light diffusing layer on surface, and light quantity control member
US5050946A (en) * 1990-09-27 1991-09-24 Compaq Computer Corporation Faceted light pipe
US5202950A (en) * 1990-09-27 1993-04-13 Compaq Computer Corporation Backlighting system with faceted light pipes
JP2640578B2 (ja) * 1991-02-27 1997-08-13 シャープ株式会社 液晶用照明装置
US5222171A (en) * 1991-10-21 1993-06-22 Jozef Straus Fused optical fiber splice element
US5143433A (en) * 1991-11-01 1992-09-01 Litton Systems Canada Limited Night vision backlighting system for liquid crystal displays

Also Published As

Publication number Publication date
EP0545429A3 (en) 1993-10-27
US5438484A (en) 1995-08-01
EP0545429B1 (de) 1999-03-17
EP0545429A2 (de) 1993-06-09
US5664873A (en) 1997-09-09
ATE177832T1 (de) 1999-04-15
DE69228655T2 (de) 1999-10-21

Similar Documents

Publication Publication Date Title
DE69228655T2 (de) Flächige Beleuchtungsvorrichtung und mit solcher Vorrichtung versehenes Anzeigegerät
US5174649B1 (en) Led lamp including refractive lens element
DE3471835D1 (en) Optical device for the concentration of the light emitted by a led, and led comprising such a device
ES2097445T3 (es) Dispositivos luminosos de capas multiples ahusados.
EP0049477A3 (de) Endoskopsystem
EP0417470A3 (en) Optical light source device
DE68918999D1 (de) Lichtquelle.
DE69322186T2 (de) Optisches Gerät zur Ausstrahlung von Licht
ES2092779T3 (es) Dispositivo de señalizacion.
DK154580C (da) Lysarmatur, isaer til lufthavne og veje
ATE223604T1 (de) Rauchmelder
SE8702376L (sv) Regnbageskapande anordning
DE68928700D1 (de) Lichtquellen-Anzeigeröhre
DE59305949D1 (de) Optisches System mit einem Linsensystem und einer Lichtquelle
DE3270690D1 (en) Coupling arrangement for a light source with divergent radiation and an optical fibre
CA2043167A1 (en) Method and apparatus to produce enhanced luminosity on display devices in glare
FR2626381B1 (fr) Guide optique de lumiere
JPS56120259A (en) Reader for equimultiple type video information
SE8105127L (sv) Indikeringsdon
FR2623597B1 (fr) Dispositif lumineux a source lumineuse disposee en regard d'un element refringent
KR910009572U (ko) 광학적 독취장치의 광원
KR940025331U (ko) 투명버튼 발광장치
GB9002580D0 (en) Optical fibre light source
KR900006885A (ko) 광원으로 이엘소자를 결합시킨 완전 밀착형 이미지 센서의 구조

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee