WO2008047284A3 - Flat and thin led-based luminary - Google Patents

Flat and thin led-based luminary Download PDF

Info

Publication number
WO2008047284A3
WO2008047284A3 PCT/IB2007/054165 IB2007054165W WO2008047284A3 WO 2008047284 A3 WO2008047284 A3 WO 2008047284A3 IB 2007054165 W IB2007054165 W IB 2007054165W WO 2008047284 A3 WO2008047284 A3 WO 2008047284A3
Authority
WO
WIPO (PCT)
Prior art keywords
flat
reflective surface
elements
reflective
front surface
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.)
Ceased
Application number
PCT/IB2007/054165
Other languages
French (fr)
Other versions
WO2008047284A2 (en
Inventor
Michel C J M Vissenberg
Willem L Ijzerman
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to US12/445,312 priority Critical patent/US8511878B2/en
Priority to JP2009531971A priority patent/JP5420415B2/en
Priority to CN200780038689.5A priority patent/CN101529291B/en
Priority to EP07826728A priority patent/EP2082269A2/en
Publication of WO2008047284A2 publication Critical patent/WO2008047284A2/en
Publication of WO2008047284A3 publication Critical patent/WO2008047284A3/en
Anticipated expiration legal-status Critical
Priority to US13/942,772 priority patent/US20130308336A1/en
Ceased 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
    • 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
    • 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
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting 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
    • 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
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted 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
    • G02B6/0013—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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/855—Optical field-shaping means, e.g. lenses
    • H10H20/856—Reflecting means

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)

Abstract

A light emitting device is provided, comprising a light guide plate (100) and at least one light emitting diode (110). An array of mutually spaced apart reflective surface elements (103, 103') is arranged between said back surface (102) and said front surface (103). The reflective surface elements (103, 103') are non-parallel relative to said back surface (101) and front surface (102), and have a front side (104) facing said front surface (102) and a back side (105) facing said back surface (101). The back surface (105) of a reflective surface element (103) faces the front surface (104) of an adjacent reflective surface element (103'). The at least one light emitting diode (110) is arranged to emit light into a region (111) between two adjacent ones of said reflective surface elements (103, 103'). Since the reflective surface elements are located within the light guide, both the back surface and the front surface of the light guide plate may be made flat. This flat surface may easily be kept clean from dust and dirt.
PCT/IB2007/054165 2006-10-16 2007-10-12 Flat and thin led-based luminary Ceased WO2008047284A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US12/445,312 US8511878B2 (en) 2006-10-16 2007-10-12 Flat and thin LED-based luminary
JP2009531971A JP5420415B2 (en) 2006-10-16 2007-10-12 Flat thin LED lighting device
CN200780038689.5A CN101529291B (en) 2006-10-16 2007-10-12 Flat and thin led-based luminary
EP07826728A EP2082269A2 (en) 2006-10-16 2007-10-12 Flat and thin led-based luminary
US13/942,772 US20130308336A1 (en) 2006-10-16 2013-07-16 Flat and thin led-based luminaire

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
EP06122321 2006-10-16
EP06122321.0 2006-10-16
EP07100359 2007-01-11
EP07100360.2 2007-01-11
EP07100361 2007-01-11
EP07100361.0 2007-01-11
EP07100359.4 2007-01-11
EP07100360 2007-01-11
EP07101366 2007-01-30
EP07101366.8 2007-01-30

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/942,772 Continuation US20130308336A1 (en) 2006-10-16 2013-07-16 Flat and thin led-based luminaire

Publications (2)

Publication Number Publication Date
WO2008047284A2 WO2008047284A2 (en) 2008-04-24
WO2008047284A3 true WO2008047284A3 (en) 2008-08-21

Family

ID=39015863

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/054165 Ceased WO2008047284A2 (en) 2006-10-16 2007-10-12 Flat and thin led-based luminary

Country Status (4)

Country Link
US (2) US8511878B2 (en)
EP (1) EP2082269A2 (en)
JP (1) JP5420415B2 (en)
WO (1) WO2008047284A2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2300871B1 (en) * 2008-06-13 2016-03-09 3M Innovative Properties Company Collimating light engine
US20110090423A1 (en) * 2008-06-13 2011-04-21 Wheatley John A Illumination device with progressive injection
WO2011033424A1 (en) 2009-09-21 2011-03-24 Koninklijke Philips Electronics N.V. Light emitting device comprising a light guide plate with reflective shielding with glare reduction
TWI465808B (en) 2010-11-25 2014-12-21 Ｌｇ伊諾特股份有限公司 Backlight unit and display apparatus using the same
US9234649B2 (en) 2011-11-01 2016-01-12 Lsi Industries, Inc. Luminaires and lighting structures
US20140016315A1 (en) * 2012-07-12 2014-01-16 Scott S. Yu Micro louver
US9287475B2 (en) * 2012-07-20 2016-03-15 Cree, Inc. Solid state lighting component package with reflective polymer matrix layer
ES2899874T3 (en) 2012-12-18 2022-03-15 Signify Holding Bv Lighting strip, lighting system, panel support element and modular panel system
CN103953893A (en) * 2014-04-17 2014-07-30 京东方科技集团股份有限公司 Dimming unit, backlight module and display device
US9541255B2 (en) 2014-05-28 2017-01-10 Lsi Industries, Inc. Luminaires and reflector modules
CN105487150A (en) * 2016-01-06 2016-04-13 利亚德光电股份有限公司 Reflecting mask and LED display device with same
US10416370B2 (en) 2016-02-22 2019-09-17 Lumileds Llc Asymmetrical light intensity distribution from luminaire
WO2017147122A1 (en) 2016-02-22 2017-08-31 Hubbell Incorporated Configurable lighting system
JP2019507477A (en) * 2016-02-22 2019-03-14 ルミレッズ リミテッド ライアビリティ カンパニー Asymmetric light intensity distribution from luminaire
BE1026261B1 (en) * 2018-05-08 2019-12-10 Schreder Sa DOWNSTREAM LIGHTING DEVICE AND FLOOR LAMP COMPRISING A MAST LIGHTING MODULE PROVIDED WITH SAME
KR102884668B1 (en) * 2019-08-01 2025-11-11 엘지이노텍 주식회사 Lighting device
JP7616961B2 (en) * 2021-07-16 2025-01-17 株式会社デンソー Light guide member

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6130730A (en) * 1996-02-14 2000-10-10 Physical Optics Corporation Backlight assembly for a display
EP1670069A1 (en) * 2003-09-29 2006-06-14 Matsushita Electric Industrial Co., Ltd. Linear light source and production method therefor and surface emission device

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JP2973254B2 (en) * 1991-10-15 1999-11-08 京セラ株式会社 Birefringent structure
WO1996017207A1 (en) * 1994-11-29 1996-06-06 Precision Lamp, Inc. Edge light for panel display
JPH08286185A (en) * 1995-04-17 1996-11-01 Sekisui Chem Co Ltd Planar light emitting device
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US6863428B2 (en) * 1997-10-24 2005-03-08 3M Innovative Properties Company Light guide illumination device appearing uniform in brightness along its length
JPH11260122A (en) * 1998-03-13 1999-09-24 Omron Corp LED array
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JP2002008422A (en) * 2000-06-26 2002-01-11 Yoshifusa Fujii Liquid crystal lighting device
JP4023079B2 (en) * 2000-08-31 2007-12-19 株式会社日立製作所 Planar illumination device and display device including the same
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JP4178840B2 (en) * 2002-06-07 2008-11-12 日亜化学工業株式会社 Planar light source, direct backlight, and signal lamp using the same
KR100513718B1 (en) * 2002-06-20 2005-09-07 삼성전자주식회사 Illumination apparatus for planar display device
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Also Published As

Publication number Publication date
US8511878B2 (en) 2013-08-20
US20100073925A1 (en) 2010-03-25
JP5420415B2 (en) 2014-02-19
EP2082269A2 (en) 2009-07-29
WO2008047284A2 (en) 2008-04-24
US20130308336A1 (en) 2013-11-21
JP2011502327A (en) 2011-01-20

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