DE69518868T2 - Hinterleuchtungsvorrichtung mit einer Lichtdurchlässigen, gerade Rillen aufweisenden Scheibe - Google Patents

Hinterleuchtungsvorrichtung mit einer Lichtdurchlässigen, gerade Rillen aufweisenden Scheibe

Info

Publication number
DE69518868T2
DE69518868T2 DE69518868T DE69518868T DE69518868T2 DE 69518868 T2 DE69518868 T2 DE 69518868T2 DE 69518868 T DE69518868 T DE 69518868T DE 69518868 T DE69518868 T DE 69518868T DE 69518868 T2 DE69518868 T2 DE 69518868T2
Authority
DE
Germany
Prior art keywords
translucent
straight groove
backlighting device
groove disc
disc
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
DE69518868T
Other languages
English (en)
Other versions
DE69518868D1 (de
Inventor
Keiji Kashima
Naoki Yoshida
Taiji Yamamoto
Yukio Inagaki
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 JP8622294A external-priority patent/JP3598531B2/ja
Application filed by Tosoh Corp filed Critical Tosoh Corp
Application granted granted Critical
Publication of DE69518868D1 publication Critical patent/DE69518868D1/de
Publication of DE69518868T2 publication Critical patent/DE69518868T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G02B6/0035—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
    • G02B6/0066—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)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
DE69518868T 1994-03-02 1995-02-28 Hinterleuchtungsvorrichtung mit einer Lichtdurchlässigen, gerade Rillen aufweisenden Scheibe Expired - Lifetime DE69518868T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3217994 1994-03-02
JP8622294A JP3598531B2 (ja) 1994-04-25 1994-04-25 バックライト

Publications (2)

Publication Number Publication Date
DE69518868D1 DE69518868D1 (de) 2000-10-26
DE69518868T2 true DE69518868T2 (de) 2001-03-15

Family

ID=26370710

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69518868T Expired - Lifetime DE69518868T2 (de) 1994-03-02 1995-02-28 Hinterleuchtungsvorrichtung mit einer Lichtdurchlässigen, gerade Rillen aufweisenden Scheibe

Country Status (5)

Country Link
US (1) US5735590A (de)
EP (2) EP1004819A3 (de)
KR (1) KR100274420B1 (de)
DE (1) DE69518868T2 (de)
TW (1) TW334523B (de)

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Also Published As

Publication number Publication date
US5735590A (en) 1998-04-07
EP0675318A1 (de) 1995-10-04
EP0675318B1 (de) 2000-09-20
EP1004819A3 (de) 2002-11-27
TW334523B (en) 1998-06-21
DE69518868D1 (de) 2000-10-26
KR950033596A (ko) 1995-12-26
KR100274420B1 (ko) 2000-12-15
EP1004819A2 (de) 2000-05-31

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