DE69740010D1 - Oberflächenlichtquelle und flüssigkristallgerät, signalvorrichtung und diese verwendende signalvorrichtung zur verkehrslenkung - Google Patents

Oberflächenlichtquelle und flüssigkristallgerät, signalvorrichtung und diese verwendende signalvorrichtung zur verkehrslenkung

Info

Publication number
DE69740010D1
DE69740010D1 DE69740010T DE69740010T DE69740010D1 DE 69740010 D1 DE69740010 D1 DE 69740010D1 DE 69740010 T DE69740010 T DE 69740010T DE 69740010 T DE69740010 T DE 69740010T DE 69740010 D1 DE69740010 D1 DE 69740010D1
Authority
DE
Germany
Prior art keywords
liquid crystal
light source
surface light
use signaling
signal
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 - Lifetime
Application number
DE69740010T
Other languages
English (en)
Inventor
Masaharu Oda
Issei Chiba
Yasuko Hayashi
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.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
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 JP17512296A external-priority patent/JP3682124B2/ja
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Application granted granted Critical
Publication of DE69740010D1 publication Critical patent/DE69740010D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0033—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
    • 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
DE69740010T 1996-02-01 1997-01-31 Oberflächenlichtquelle und flüssigkristallgerät, signalvorrichtung und diese verwendende signalvorrichtung zur verkehrslenkung Expired - Lifetime DE69740010D1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1692896 1996-02-01
JP4071996 1996-02-01
JP17512296A JP3682124B2 (ja) 1996-07-04 1996-07-04 面光源素子
PCT/JP1997/000237 WO1997028403A1 (fr) 1996-02-01 1997-01-31 Source lumineuse superficielle et affichage a cristaux liquides, et equipements de signalisation et de regulation du trafic l'utilisant

Publications (1)

Publication Number Publication Date
DE69740010D1 true DE69740010D1 (de) 2010-11-11

Family

ID=27281622

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69740010T Expired - Lifetime DE69740010D1 (de) 1996-02-01 1997-01-31 Oberflächenlichtquelle und flüssigkristallgerät, signalvorrichtung und diese verwendende signalvorrichtung zur verkehrslenkung

Country Status (7)

Country Link
US (3) US6099135A (de)
EP (1) EP0882930B1 (de)
KR (1) KR19990082166A (de)
CN (1) CN1078335C (de)
DE (1) DE69740010D1 (de)
ID (1) ID15863A (de)
WO (1) WO1997028403A1 (de)

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US6502947B2 (en) * 2001-03-30 2003-01-07 Mitsubishi Rayon Co., Ltd. Planar light source device and liquid crystal display apparatus
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JP4676190B2 (ja) * 2004-11-25 2011-04-27 大日本印刷株式会社 光拡散シート及び透過型スクリーン
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JP2007258152A (ja) * 2006-02-24 2007-10-04 Citizen Electronics Co Ltd バックライトユニット及びそれを備えた表示装置
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JPWO2008032848A1 (ja) * 2006-09-15 2010-01-28 Ｍｇｃフィルシート株式会社 位相差フィルム
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Also Published As

Publication number Publication date
US20010030861A1 (en) 2001-10-18
EP0882930B1 (de) 2010-09-29
KR19990082166A (ko) 1999-11-25
EP0882930A4 (de) 1999-03-31
WO1997028403A1 (fr) 1997-08-07
US6244719B1 (en) 2001-06-12
ID15863A (id) 1997-08-14
CN1078335C (zh) 2002-01-23
US6099135A (en) 2000-08-08
EP0882930A1 (de) 1998-12-09
KR100409150B1 (de) 2004-02-18
US6332691B2 (en) 2001-12-25
CN1212042A (zh) 1999-03-24

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