JP2742880B2 - 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 - Google Patents

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

Info

Publication number
JP2742880B2
JP2742880B2 JP6210694A JP21069494A JP2742880B2 JP 2742880 B2 JP2742880 B2 JP 2742880B2 JP 6210694 A JP6210694 A JP 6210694A JP 21069494 A JP21069494 A JP 21069494A JP 2742880 B2 JP2742880 B2 JP 2742880B2
Authority
JP
Japan
Prior art keywords
light
light source
sheet
height
diffusion sheet
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
JP6210694A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0855507A (ja
Inventor
道子 竹内
俊和 西尾
泰司 石井
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP6210694A priority Critical patent/JP2742880B2/ja
Priority to US08/619,623 priority patent/US5944405A/en
Priority to KR1019960701957A priority patent/KR100215127B1/ko
Priority to TW084109466A priority patent/TW289802B/zh
Publication of JPH0855507A publication Critical patent/JPH0855507A/ja
Application granted granted Critical
Publication of JP2742880B2 publication Critical patent/JP2742880B2/ja
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
    • 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
    • G02B6/005—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
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
JP6210694A 1994-08-12 1994-08-12 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 Expired - Lifetime JP2742880B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP6210694A JP2742880B2 (ja) 1994-08-12 1994-08-12 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
US08/619,623 US5944405A (en) 1994-08-12 1995-08-11 Flat light source using light-diffusing sheet with projections thereon
KR1019960701957A KR100215127B1 (ko) 1994-08-12 1995-08-11 광학산 시트를 이용한 면광원
TW084109466A TW289802B (enEXAMPLES) 1994-08-12 1995-09-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6210694A JP2742880B2 (ja) 1994-08-12 1994-08-12 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

Publications (2)

Publication Number Publication Date
JPH0855507A JPH0855507A (ja) 1996-02-27
JP2742880B2 true JP2742880B2 (ja) 1998-04-22

Family

ID=16593560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6210694A Expired - Lifetime JP2742880B2 (ja) 1994-08-12 1994-08-12 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

Country Status (4)

Country Link
US (1) US5944405A (enEXAMPLES)
JP (1) JP2742880B2 (enEXAMPLES)
KR (1) KR100215127B1 (enEXAMPLES)
TW (1) TW289802B (enEXAMPLES)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004223726A (ja) * 2003-01-20 2004-08-12 Dainippon Printing Co Ltd 真偽判定体

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JPH0855507A (ja) 1996-02-27
TW289802B (enEXAMPLES) 1996-11-01

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