DE3625767C2 - - Google Patents

Info

Publication number
DE3625767C2
DE3625767C2 DE3625767A DE3625767A DE3625767C2 DE 3625767 C2 DE3625767 C2 DE 3625767C2 DE 3625767 A DE3625767 A DE 3625767A DE 3625767 A DE3625767 A DE 3625767A DE 3625767 C2 DE3625767 C2 DE 3625767C2
Authority
DE
Germany
Prior art keywords
light
guide plate
light guide
plate
light source
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
Application number
DE3625767A
Other languages
German (de)
English (en)
Other versions
DE3625767A1 (de
Inventor
Kuniaki Kato
Mutsumi Tokio/Tokyo Jp Takahashi
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.)
TOKYO KEIKI CO Ltd TOKIO/TOKYO JP
Original Assignee
TOKYO KEIKI CO Ltd TOKIO/TOKYO JP
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 TOKYO KEIKI CO Ltd TOKIO/TOKYO JP filed Critical TOKYO KEIKI CO Ltd TOKIO/TOKYO JP
Publication of DE3625767A1 publication Critical patent/DE3625767A1/de
Application granted granted Critical
Publication of DE3625767C2 publication Critical patent/DE3625767C2/de
Granted 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0263—Diffusing elements; Afocal elements characterised by the diffusing properties with positional variation of the diffusing properties, e.g. gradient or patterned diffuser
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • 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
    • G02B6/0058—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
DE19863625767 1985-07-30 1986-07-30 Lichtdiffusionsvorrichtung mit rueckstrahler Granted DE3625767A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60168257A JPS6229003A (ja) 1985-07-30 1985-07-30 背面反射式光拡散装置

Publications (2)

Publication Number Publication Date
DE3625767A1 DE3625767A1 (de) 1987-02-12
DE3625767C2 true DE3625767C2 (en, 2012) 1988-09-29

Family

ID=15864654

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863625767 Granted DE3625767A1 (de) 1985-07-30 1986-07-30 Lichtdiffusionsvorrichtung mit rueckstrahler

Country Status (3)

Country Link
US (1) US4673254A (en, 2012)
JP (1) JPS6229003A (en, 2012)
DE (1) DE3625767A1 (en, 2012)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835942A1 (de) * 1988-10-21 1990-04-26 Telefunken Electronic Gmbh Flaechenhafter strahler
DE4415457A1 (de) * 1994-05-03 1995-11-09 Wolfgang Stubenhoefer Reklametafel
DE19746764A1 (de) * 1997-10-23 1999-05-06 Mannesmann Vdo Ag Anzeigeeinheit
DE10032158A1 (de) * 2000-07-01 2002-01-10 Hella Kg Hueck & Co Stabförmiger Lichtleiter
DE10134278A1 (de) * 2001-07-13 2003-01-30 Spectral Ges Fuer Lichttechnik Leuchte

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2539491Y2 (ja) * 1991-10-09 1997-06-25 惠和商工株式会社 光拡散シート材
FR2620795B1 (fr) * 1987-09-18 1992-02-28 Courageux Claude Diffuseur de lumiere
JP2806937B2 (ja) * 1988-03-23 1998-09-30 富士通株式会社 面照明装置
US4949120A (en) * 1988-04-21 1990-08-14 Ricoh Company, Ltd. Illuminating device
FR2632432A1 (fr) * 1988-06-03 1989-12-08 Daric Sa Guy Dispositif de repartition de lumiere blanche sur un ecran plat, notamment a cristaux liquides
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
JPH068561Y2 (ja) * 1989-06-16 1994-03-02 三菱油化株式会社 光拡散シート
JPH0365982A (ja) * 1989-08-03 1991-03-20 Pioneer Electron Corp 表示装置における表示板照明装置
JP2520739B2 (ja) * 1989-08-30 1996-07-31 株式会社エンプラス 照明装置
US4975808A (en) * 1989-10-02 1990-12-04 Motorola, Inc. Backlighting apparatus
US5093765A (en) * 1990-02-16 1992-03-03 Tosoh Corporation Back lighting device for a panel
JPH0695051B2 (ja) * 1990-04-09 1994-11-24 旭光学工業株式会社 オートホワイトバランスセンサの光入射装置
US5134549A (en) * 1990-06-19 1992-07-28 Enplas Corporation Surface light source device
DE69115678T2 (de) * 1990-09-12 1996-07-18 Mitsubishi Rayon Co Flächenartiges beleuchtungselement
US5764315A (en) * 1992-01-27 1998-06-09 Sekisui Chemical Co., Ltd. Light adjusting sheet for a planar lighting device and a planar lighting device and a liquid crystal display using the sheet
GB2267378B (en) * 1992-05-22 1996-07-10 Nokia Mobile Phones Uk Illuminated LCD apparatus
US5282091A (en) * 1992-06-05 1994-01-25 United Technologies Automotive, Inc. Motor vehicle courtesy/reading light lens with dot pattern
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
DE69435168D1 (de) 1993-01-19 2009-01-02 Canon Kk Längliche Beleuchtungsvorrichtung und Informationsauslesevorrichtung, die eine solche Beleuchtungsvorrichtung aufweist
EP0797045B1 (en) * 1993-02-01 1999-05-12 Tosoh Corporation Backlighting device
GB9317086D0 (en) * 1993-08-17 1993-09-29 Robertson Stowe Ltd Planar illumination apparatus
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
US5796450A (en) * 1994-12-16 1998-08-18 Canon Kabushiki Kaisha Illumination device and liquid crystal display apparatus including same
GB2296362B (en) * 1994-12-23 1999-03-03 Nokia Mobile Phones Ltd Illuminated LCD apparatus and method of manufacture
US5613751A (en) * 1995-06-27 1997-03-25 Lumitex, Inc. Light emitting panel assemblies
US6712481B2 (en) * 1995-06-27 2004-03-30 Solid State Opto Limited Light emitting panel assemblies
US6219117B1 (en) 1996-06-12 2001-04-17 Alps Electric Co., Ltd. Liquid crystal display device
US5870156A (en) * 1996-09-05 1999-02-09 Northern Telecom Limited Shadow mask for backlit LCD
TW464784B (en) * 1996-12-06 2001-11-21 Alps Electric Co Ltd Liquid crystal display device
DE19652209A1 (de) * 1996-12-16 1998-06-18 Bosch Gmbh Robert Beleuchtungseinheit
SG67385A1 (en) * 1997-04-14 2001-07-24 Hewlett Packard Co A method and device for conducting and substantially evenly dispersing light from a light source
JP4159059B2 (ja) * 1998-06-05 2008-10-01 シチズン電子株式会社 面状光源ユニット
DE19841888A1 (de) * 1998-09-11 2000-03-16 Gerhard Karl Leuchtkörper
DE19940238A1 (de) * 1999-08-25 2001-03-01 Lohmann Therapie Syst Lts Wirkstoffhaltiges therapeutisches System zur Applikation auf der Haut mit mindestens zwei polymerhaltigen Schichten
US6681509B1 (en) 2000-09-06 2004-01-27 France Jean Artistic display
DE10113234A1 (de) * 2001-03-19 2002-10-02 Infolight Gmbh Beleuchtungsvorrichtung
AU2002365757A1 (en) * 2001-11-30 2003-06-17 Equity Industries Corp. Clocks with diffusion reflector lighting
JP3770558B2 (ja) * 2002-01-18 2006-04-26 シチズン電子株式会社 導光板
US6900941B2 (en) * 2002-05-16 2005-05-31 Eastman Kodak Company Light diffuser with colored variable diffusion
US6898012B2 (en) * 2002-05-16 2005-05-24 Eastman Kodak Company Light reflector with variable diffuse light reflection
AU2003266667A1 (en) * 2002-09-30 2004-04-23 Sharp Kabushiki Kaisha Backlight unit and liquid crystal display unit using backlight unit
CN1232501C (zh) * 2002-11-29 2005-12-21 重庆凯林制药有限公司 用于制备万拉法新中间体的环己醇衍生物的制备工艺
TWM255413U (en) * 2002-12-13 2005-01-11 Hon Hai Prec Ind Co Ltd Surface light module and liquid crystal display using the same
DE20304341U1 (de) * 2003-03-18 2004-07-29 Aeg Gesellschaft für Moderne Informationssysteme mbH Flüssigkristallanzeige zur Approximation einer gekrümmten Oberfläche
KR100567250B1 (ko) * 2003-09-06 2006-04-03 현대모비스 주식회사 차량용 오디오의 액정표시모듈
TWI251701B (en) * 2004-05-13 2006-03-21 Au Optronics Corp Lighting positioning device
KR101285620B1 (ko) * 2005-06-28 2013-07-12 엘지디스플레이 주식회사 백라이트유니트 및 이를 구비한 액정표시장치
US7661849B2 (en) * 2006-11-27 2010-02-16 Ping Sun Patrick Lo Illuminated apparatus
KR20080085242A (ko) * 2007-03-19 2008-09-24 삼성전자주식회사 도광판 및 이를 이용하는 백라이트 어셈블리
KR101318253B1 (ko) * 2007-03-30 2013-10-18 삼성디스플레이 주식회사 도광판 및 이를 갖는 표시 장치
DE102007050271B4 (de) * 2007-10-18 2012-02-02 Noctron Soparfi S.A. Lichtleitereinrichtung sowie Beleuchtungsvorrichtung mit einer solchen Lichtleitereinrichtung
US20110007506A1 (en) * 2008-04-11 2011-01-13 Harison Toshiba Lighting Corp. Lighting apparatus
TWI363888B (en) * 2008-09-22 2012-05-11 Au Optronics Corp Light guide plate, backlight module and liquid crystal dislay
US20110219648A1 (en) * 2010-03-12 2011-09-15 Trevor James Led edge-lit signage utilizing digital print technology
JP5045826B2 (ja) 2010-03-31 2012-10-10 ソニー株式会社 光源デバイスおよび立体表示装置
EP2387081B1 (en) * 2010-05-11 2015-09-30 Samsung Electronics Co., Ltd. Semiconductor light emitting device and method for fabricating the same
JP4930631B2 (ja) 2010-09-27 2012-05-16 ソニー株式会社 立体表示装置
JP5674023B2 (ja) 2011-01-27 2015-02-18 ソニー株式会社 光源デバイスおよび表示装置
JP4973794B1 (ja) * 2011-04-06 2012-07-11 ソニー株式会社 表示装置
JP2012237961A (ja) 2011-04-28 2012-12-06 Sony Corp 表示装置および電子機器
US20150070902A1 (en) * 2013-04-18 2015-03-12 Vode Lighting, Inc. System to disperse luminance
US10023325B2 (en) * 2013-12-04 2018-07-17 The Boeing Company Methods and assembly for illuminating a surface of an aircraft passenger cabin
KR20170066974A (ko) 2015-12-07 2017-06-15 삼성전자주식회사 광 확산판 및 이를 포함하는 디스플레이 장치

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JPS4814545B1 (en, 2012) * 1969-10-15 1973-05-08
US4206501A (en) * 1978-06-12 1980-06-03 Motorola, Inc. Apparatus and methods for back illuminating a display surface
US4252416A (en) * 1978-10-23 1981-02-24 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Optical instrument for gathering and distribution of light
US4487481A (en) * 1980-03-24 1984-12-11 Epson Corporation Backlighted liquid crystal display
US4502761A (en) * 1981-03-13 1985-03-05 Robert Bosch Gmbh Gradient-free illumination of passive readout display devices

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835942A1 (de) * 1988-10-21 1990-04-26 Telefunken Electronic Gmbh Flaechenhafter strahler
DE4415457A1 (de) * 1994-05-03 1995-11-09 Wolfgang Stubenhoefer Reklametafel
DE19746764A1 (de) * 1997-10-23 1999-05-06 Mannesmann Vdo Ag Anzeigeeinheit
DE19746764B4 (de) * 1997-10-23 2006-09-14 Siemens Ag Anzeigeeinheit
DE10032158A1 (de) * 2000-07-01 2002-01-10 Hella Kg Hueck & Co Stabförmiger Lichtleiter
DE10134278A1 (de) * 2001-07-13 2003-01-30 Spectral Ges Fuer Lichttechnik Leuchte

Also Published As

Publication number Publication date
JPS6229003A (ja) 1987-02-07
DE3625767A1 (de) 1987-02-12
US4673254A (en) 1987-06-16

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee