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DE69220870D1 - Vorrichtung zur rückseitigen Beleuchtung - Google Patents

Vorrichtung zur rückseitigen Beleuchtung

Info

Publication number
DE69220870D1
DE69220870D1 DE69220870T DE69220870T DE69220870D1 DE 69220870 D1 DE69220870 D1 DE 69220870D1 DE 69220870 T DE69220870 T DE 69220870T DE 69220870 T DE69220870 T DE 69220870T DE 69220870 D1 DE69220870 D1 DE 69220870D1
Authority
DE
Germany
Prior art keywords
lighting device
rear lighting
lighting
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
DE69220870T
Other languages
English (en)
Other versions
DE69220870T2 (de
Inventor
Keiji Kashima
Naoki Yoshida
Osamu Shoji
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.)
Tosoh Corp
Original Assignee
Tosoh Corp
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 JP3233799A external-priority patent/JPH063667A/ja
Priority claimed from JP3250327A external-priority patent/JP2768082B2/ja
Priority claimed from JP3275022A external-priority patent/JP3030792B2/ja
Application filed by Tosoh Corp filed Critical Tosoh Corp
Publication of DE69220870D1 publication Critical patent/DE69220870D1/de
Application granted granted Critical
Publication of DE69220870T2 publication Critical patent/DE69220870T2/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
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement 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
    • G02B6/0033—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
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)
DE69220870T 1991-08-22 1992-08-21 Vorrichtung zur rückseitigen Beleuchtung Expired - Fee Related DE69220870T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3233799A JPH063667A (ja) 1991-08-22 1991-08-22 バックライト
JP3250327A JP2768082B2 (ja) 1991-09-04 1991-09-04 パネル用バックライト
JP3275022A JP3030792B2 (ja) 1991-09-27 1991-09-27 バックライト
JP03308196A JP3134422B2 (ja) 1991-08-22 1991-10-29 バックライト

Publications (2)

Publication Number Publication Date
DE69220870D1 true DE69220870D1 (de) 1997-08-21
DE69220870T2 DE69220870T2 (de) 1998-02-05

Family

ID=27477552

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69220870T Expired - Fee Related DE69220870T2 (de) 1991-08-22 1992-08-21 Vorrichtung zur rückseitigen Beleuchtung

Country Status (3)

Country Link
US (2) US5442523A (de)
EP (1) EP0534140B1 (de)
DE (1) DE69220870T2 (de)

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CA2088113C (en) * 1992-01-27 1999-03-30 Tomohiro Yokota Light adjusting sheet for a planar lighting device and a planar lighting device and a liquid crystal display using the sheet
JP3136200B2 (ja) * 1992-07-22 2001-02-19 株式会社日立製作所 液晶表示装置
JP3006306B2 (ja) * 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 光学的フイルム及び上記光学的フイルムを用いた液晶表示装置
JP2630714B2 (ja) * 1992-10-08 1997-07-16 茶谷産業株式会社 面照明装置
US6025897A (en) 1993-12-21 2000-02-15 3M Innovative Properties Co. Display with reflective polarizer and randomizing cavity
CN1046664C (zh) 1993-12-21 1999-11-24 美国3M公司 多层聚合物薄膜，其制造方法及其应用
JP2742880B2 (ja) * 1994-08-12 1998-04-22 大日本印刷株式会社 面光源、それを用いた表示装置、及びそれらに用いる光拡散シート
US5600455A (en) * 1994-08-31 1997-02-04 Enplas Corporation Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface
CA2199722C (en) * 1994-09-27 2006-01-31 Mark E. Gardiner Luminance control film
US5929951A (en) * 1994-10-21 1999-07-27 Canon Kabushiki Kaisha Illumination device and display apparatus including same
US5579134A (en) * 1994-11-30 1996-11-26 Honeywell Inc. Prismatic refracting optical array for liquid flat panel crystal display backlight
US6002887A (en) * 1995-03-13 1999-12-14 Asahi Kogaku Kogyo Kabushiki Kaisha View finder
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US6712481B2 (en) 1995-06-27 2004-03-30 Solid State Opto Limited Light emitting panel assemblies
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US6600175B1 (en) 1996-03-26 2003-07-29 Advanced Technology Materials, Inc. Solid state white light emitter and display using same
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US5815228A (en) * 1996-12-06 1998-09-29 Ericsson Inc. Lighting for liquid crystal displays
US6123431A (en) * 1997-03-19 2000-09-26 Sanyo Electric Co., Ltd Backlight apparatus and light guide plate
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US6132053A (en) * 1997-06-17 2000-10-17 Baker Electronics, Inc. Optimized highly efficient large area modular flat panel display lighting device
US6863428B2 (en) * 1997-10-24 2005-03-08 3M Innovative Properties Company Light guide illumination device appearing uniform in brightness along its length
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KR100271672B1 (ko) * 1998-05-20 2000-11-15 구본준 시이트 구조의 광학소자 및 그를 이용한 백라이트 유니트
JP2000056226A (ja) * 1998-08-04 2000-02-25 Olympus Optical Co Ltd 表示・撮像装置
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US6752505B2 (en) 1999-02-23 2004-06-22 Solid State Opto Limited Light redirecting films and film systems
US6827456B2 (en) 1999-02-23 2004-12-07 Solid State Opto Limited Transreflectors, transreflector systems and displays and methods of making transreflectors
US7364341B2 (en) * 1999-02-23 2008-04-29 Solid State Opto Limited Light redirecting films including non-interlockable optical elements
JP2001035225A (ja) * 1999-07-26 2001-02-09 Minebea Co Ltd 面状照明装置
US6356391B1 (en) 1999-10-08 2002-03-12 3M Innovative Properties Company Optical film with variable angle prisms
US6845212B2 (en) 1999-10-08 2005-01-18 3M Innovative Properties Company Optical element having programmed optical structures
US6447135B1 (en) 1999-10-08 2002-09-10 3M Innovative Properties Company Lightguide having a directly secured reflector and method of making the same
US7046905B1 (en) 1999-10-08 2006-05-16 3M Innovative Properties Company Blacklight with structured surfaces
KR20000024140A (ko) * 2000-01-25 2000-05-06 윤효철 백라이트 장치
JP2001229725A (ja) * 2000-02-16 2001-08-24 Citizen Electronics Co Ltd 導光板
US7230764B2 (en) * 2000-08-18 2007-06-12 Reflexite Corporation Differentially-cured materials and process for forming same
US20040190102A1 (en) * 2000-08-18 2004-09-30 Mullen Patrick W. Differentially-cured materials and process for forming same
DE60117573T2 (de) 2000-08-18 2006-12-14 Reflexite Corp., Avon Verschiedenartig gehärtete materialen und verfahren zur deren herstellung
KR100756255B1 (ko) * 2000-09-15 2007-09-07 쓰리엠 이노베이티브 프로퍼티즈 캄파니 도광 램프용 광 추출기
AU2000275542A1 (en) 2000-09-15 2002-03-26 3M Innovative Properties Company Light extractor for a light guide lamp
US6683720B2 (en) 2000-12-14 2004-01-27 Mitsui Chemicals, Inc. Reflector, sidelight type backlighting apparatus and reflector substrate
CN1294445C (zh) * 2001-11-30 2007-01-10 奇美电子股份有限公司 用于直下式背光模块的多角度反射板
US6880946B2 (en) * 2002-01-15 2005-04-19 Reflexite Corporation Grooved optical microstructure light collimating films
US6908204B2 (en) 2002-02-02 2005-06-21 Edward Robert Kraft Flat panel luminaire having embedded light guides
EP1481269A2 (de) * 2002-02-02 2004-12-01 KRAFT, Edward R. Lichtemissions-flachtafel mit eingebetteten lichtführungen mit dem ergebnis einer gesteuerten lichtextraktion für eine allgemeine beleuchtungslampe
US6796700B2 (en) 2002-02-02 2004-09-28 Edward Robert Kraft Flat panel luminaire with remote light source and hollow light pipe for back lit signage applications
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US7024809B1 (en) 2003-01-02 2006-04-11 James Poma Composite panel display by refracted light
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CN101448632B (zh) * 2006-05-18 2012-12-12 3M创新有限公司 用于制备具有提取结构的光导的方法以及由此方法生产的光导
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AU2007354904B2 (en) 2007-06-14 2014-06-26 Avery Dennison Corporation Illuminated graphical and information display
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Also Published As

Publication number Publication date
US5442523A (en) 1995-08-15
EP0534140A1 (de) 1993-03-31
DE69220870T2 (de) 1998-02-05
EP0534140B1 (de) 1997-07-16
US5730518A (en) 1998-03-24

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