WO2011148173A3 - Lighting apparatus - Google Patents

Lighting apparatus Download PDF

Info

Publication number
WO2011148173A3
WO2011148173A3 PCT/GB2011/050982 GB2011050982W WO2011148173A3 WO 2011148173 A3 WO2011148173 A3 WO 2011148173A3 GB 2011050982 W GB2011050982 W GB 2011050982W WO 2011148173 A3 WO2011148173 A3 WO 2011148173A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
lighting apparatus
light guide
light output
extraction features
Prior art date
Application number
PCT/GB2011/050982
Other languages
French (fr)
Other versions
WO2011148173A2 (en
Inventor
James Gourlay
Original Assignee
Design Led Products Limited
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 Design Led Products Limited filed Critical Design Led Products Limited
Publication of WO2011148173A2 publication Critical patent/WO2011148173A2/en
Publication of WO2011148173A3 publication Critical patent/WO2011148173A3/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
    • 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
    • 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
    • G02B6/0063—Means for improving the coupling-out of light from the light guide for extracting light out both the major surfaces 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
    • G02B6/0066—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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • 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
    • G02B6/0035—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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface 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
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A lighting apparatus that provides an energy efficient illumination source that is suitable for use as an interior, ambient lighting source is described. The lighting apparatus comprising a light guide ( 2 ) suitable for guiding light coupled to a first surface ( 3 ) to a second surface of the light guide thus providing a first light output ( 7a) emitted from the second surface ( 6a). The light guide further comprises a plurality of extraction features ( 10 ) located on a further surface thereof the extraction features being arranged so as to redirect a portion of the guided light so as to provide a second light output that is more diffuse than the first light output.
PCT/GB2011/050982 2010-05-24 2011-05-24 Lighting apparatus WO2011148173A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1008601.5 2010-05-24
GBGB1008601.5A GB201008601D0 (en) 2010-05-24 2010-05-24 Lighting apparatus

Publications (2)

Publication Number Publication Date
WO2011148173A2 WO2011148173A2 (en) 2011-12-01
WO2011148173A3 true WO2011148173A3 (en) 2012-02-23

Family

ID=42341196

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/050982 WO2011148173A2 (en) 2010-05-24 2011-05-24 Lighting apparatus

Country Status (2)

Country Link
GB (2) GB201008601D0 (en)
WO (1) WO2011148173A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2884824C (en) 2012-09-24 2023-12-12 Invuity, Inc. Methods and apparatus for controlling optical properties of light
JP2019515489A (en) 2016-04-22 2019-06-06 グロ アーベーＧｌｏ Ａｂ Narrow-pitch direct-view display and method of manufacturing the same
DE202018103783U1 (en) 2018-07-02 2018-07-09 Tecnolight Leuchten Gmbh lamp
WO2022056264A1 (en) 2020-09-11 2022-03-17 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. Vehicle interior component

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04118803A (en) * 1989-05-31 1992-04-20 Matsushita Electric Works Ltd Lighting appliance
US20080192458A1 (en) * 2007-02-12 2008-08-14 Intematix Corporation Light emitting diode lighting system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1185073A (en) * 1997-09-02 1999-03-30 Sasahara Hideki Display device
JP2004302028A (en) * 2003-03-31 2004-10-28 Mitsubishi Electric Corp Display device and guiding light device
US20080232135A1 (en) * 2006-05-31 2008-09-25 3M Innovative Properties Company Light guide
TWI428645B (en) * 2008-06-30 2014-03-01 Cpt Technology Group Co Ltd Color light guide panel and liquid crystal display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04118803A (en) * 1989-05-31 1992-04-20 Matsushita Electric Works Ltd Lighting appliance
US20080192458A1 (en) * 2007-02-12 2008-08-14 Intematix Corporation Light emitting diode lighting system

Also Published As

Publication number Publication date
GB2480758A (en) 2011-11-30
GB201108722D0 (en) 2011-07-06
WO2011148173A2 (en) 2011-12-01
GB201008601D0 (en) 2010-07-07

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