WO2006126155A3 - Planar lighting device - Google Patents

Planar lighting device Download PDF

Info

Publication number
WO2006126155A3
WO2006126155A3 PCT/IB2006/051603 IB2006051603W WO2006126155A3 WO 2006126155 A3 WO2006126155 A3 WO 2006126155A3 IB 2006051603 W IB2006051603 W IB 2006051603W WO 2006126155 A3 WO2006126155 A3 WO 2006126155A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
lighting device
guide
guide arrangement
guide plate
Prior art date
Application number
PCT/IB2006/051603
Other languages
French (fr)
Other versions
WO2006126155A2 (en
Inventor
Johan Marra
Boer Dirk K G De
Original Assignee
Koninkl Philips Electronics Nv
Johan Marra
Boer Dirk K G De
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 Koninkl Philips Electronics Nv, Johan Marra, Boer Dirk K G De filed Critical Koninkl Philips Electronics Nv
Priority to EP06765694A priority Critical patent/EP1889104A2/en
Priority to JP2008512989A priority patent/JP2008546139A/en
Publication of WO2006126155A2 publication Critical patent/WO2006126155A2/en
Publication of WO2006126155A3 publication Critical patent/WO2006126155A3/en

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
    • 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
    • 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
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area

Abstract

The present invention relates to a lighting device comprising a light-guide arrangement in which inputted light from at least one light source is propagated through and at least partly confined within the light-guide arrangement by means of total internal reflection. The light-guide arrangement comprises first (6) and second (7) light-guide plates and an intermediate layer (8) having a refractive index which is lower than the refractive index of said first light-guide plate (6) , said first light-guide plate (6) being arranged to receive light from said at least one light source. The second (7) light-guide plate comprises an out-coupling structure (10) to output and collimate light from the lighting device. This light-guide arrangement provides an improved lateral light-intensity averaging effect, such that light is more uniformly emitted from the output surface of the lighting device, even if said at least one light source is point or line-shaped.
PCT/IB2006/051603 2005-05-27 2006-05-19 Planar lighting device WO2006126155A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06765694A EP1889104A2 (en) 2005-05-27 2006-05-19 Lighting device
JP2008512989A JP2008546139A (en) 2005-05-27 2006-05-19 Lighting device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05104563 2005-05-27
EP05104563.1 2005-05-27

Publications (2)

Publication Number Publication Date
WO2006126155A2 WO2006126155A2 (en) 2006-11-30
WO2006126155A3 true WO2006126155A3 (en) 2007-03-01

Family

ID=37116183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/051603 WO2006126155A2 (en) 2005-05-27 2006-05-19 Planar lighting device

Country Status (6)

Country Link
EP (1) EP1889104A2 (en)
JP (1) JP2008546139A (en)
KR (1) KR20080021059A (en)
CN (1) CN101185015A (en)
TW (1) TW200706935A (en)
WO (1) WO2006126155A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9164223B2 (en) 2009-03-05 2015-10-20 Iti Scotland Limited Light guides

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5108418B2 (en) * 2007-08-28 2012-12-26 パナソニック株式会社 Lighting system
GB2448564B (en) 2007-11-26 2009-04-29 Iti Scotland Ltd Light guides
GB0813186D0 (en) 2008-07-18 2008-08-27 3M Innovative Properties Co Lighting device comprising a light guide and a support
GB2464916B (en) 2008-10-21 2013-07-31 Iti Scotland Ltd Light Guides
AT507530B1 (en) 2008-11-04 2013-05-15 Al Systems Gmbh LIGHTING ELEMENT FOR A LIGHTING DEVICE AND LIGHTING DEVICE
WO2010100505A1 (en) 2009-03-05 2010-09-10 Iti Scotland Limited Light guides
US8735791B2 (en) 2010-07-13 2014-05-27 Svv Technology Innovations, Inc. Light harvesting system employing microstructures for efficient light trapping
JP5693745B2 (en) * 2010-12-17 2015-04-01 ドルビー ラボラトリーズ ライセンシング コーポレイション Quantum dots for display panels
US9097826B2 (en) 2011-10-08 2015-08-04 Svv Technology Innovations, Inc. Collimating illumination systems employing a waveguide
KR102459467B1 (en) * 2015-07-17 2022-10-27 삼성디스플레이 주식회사 Display device
EP3409238A1 (en) * 2017-06-02 2018-12-05 Koninklijke Philips N.V. Teeth illumination device
CN114442374A (en) * 2022-02-18 2022-05-06 深圳市日普科技有限公司 Backlight module with diffraction optical element

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5944405A (en) * 1994-08-12 1999-08-31 Dai Nippon Printing Co., Ltd. Flat light source using light-diffusing sheet with projections thereon
US6049649A (en) * 1996-03-28 2000-04-11 Enplas Corporation Surface light source device of side-light type
WO2003027568A1 (en) * 2001-09-26 2003-04-03 Stichting Dutch Polymer Institute Micro-structured illumination system for providing polarized light
WO2004027467A1 (en) * 2002-09-18 2004-04-01 Koninklijke Philips Electronics N.V. Light generating device comprising light input and light output units
US20040075897A1 (en) * 1998-08-05 2004-04-22 Mitsubishi Rayon Co., Ltd. Lens sheet and method of manufacturing the same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06242441A (en) * 1992-12-22 1994-09-02 Canon Inc Light source device and display device equipped with the same
JPH10189237A (en) * 1996-12-25 1998-07-21 Casio Comput Co Ltd Surface light emitting body and liqiud crystal display device using it
US6424786B1 (en) * 1996-12-02 2002-07-23 Honeywell International Inc. Illumination assembly
JP3457591B2 (en) * 1999-10-08 2003-10-20 インターナショナル・ビジネス・マシーンズ・コーポレーション Liquid crystal display
JP2002075657A (en) * 2000-08-23 2002-03-15 Seiko Epson Corp Organic el display element and electronic device
JP2002109934A (en) * 2000-10-04 2002-04-12 Matsushita Electric Ind Co Ltd Image display device
JP2002359068A (en) * 2001-05-31 2002-12-13 Seiko Epson Corp El device, el display, el lighting system, liquid crystal device using this lighting system and electronic equipment
JP2003131227A (en) * 2001-10-26 2003-05-08 Nitto Denko Corp Liquid crystal display device
JP2003332068A (en) * 2002-05-15 2003-11-21 Nitto Denko Corp Electroluminescence element
KR100897745B1 (en) * 2002-06-26 2009-05-15 삼성전자주식회사 Back light assembly and direct type liquid crystal display
JP4135092B2 (en) * 2003-09-29 2008-08-20 ソニー株式会社 Backlight and diffusion plate manufacturing method, and liquid crystal display device
JP4427718B2 (en) * 2003-10-28 2010-03-10 ソニー株式会社 Light guide manufacturing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5944405A (en) * 1994-08-12 1999-08-31 Dai Nippon Printing Co., Ltd. Flat light source using light-diffusing sheet with projections thereon
US6049649A (en) * 1996-03-28 2000-04-11 Enplas Corporation Surface light source device of side-light type
US20040075897A1 (en) * 1998-08-05 2004-04-22 Mitsubishi Rayon Co., Ltd. Lens sheet and method of manufacturing the same
WO2003027568A1 (en) * 2001-09-26 2003-04-03 Stichting Dutch Polymer Institute Micro-structured illumination system for providing polarized light
WO2004027467A1 (en) * 2002-09-18 2004-04-01 Koninklijke Philips Electronics N.V. Light generating device comprising light input and light output units

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9164223B2 (en) 2009-03-05 2015-10-20 Iti Scotland Limited Light guides

Also Published As

Publication number Publication date
EP1889104A2 (en) 2008-02-20
WO2006126155A2 (en) 2006-11-30
JP2008546139A (en) 2008-12-18
TW200706935A (en) 2007-02-16
CN101185015A (en) 2008-05-21
KR20080021059A (en) 2008-03-06

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