WO2021099789A1 - Dispositif d'éclairage uniforme - Google Patents

Dispositif d'éclairage uniforme Download PDF

Info

Publication number
WO2021099789A1
WO2021099789A1 PCT/GB2020/052954 GB2020052954W WO2021099789A1 WO 2021099789 A1 WO2021099789 A1 WO 2021099789A1 GB 2020052954 W GB2020052954 W GB 2020052954W WO 2021099789 A1 WO2021099789 A1 WO 2021099789A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
guide
lighting device
uniform lighting
coupled
Prior art date
Application number
PCT/GB2020/052954
Other languages
English (en)
Inventor
James Gourlay
Marius JANKAUSKAS
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 WO2021099789A1 publication Critical patent/WO2021099789A1/fr

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/50—Mounting arrangements
    • B60Q3/54—Lighting devices embedded in interior trim, e.g. in roof liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/60—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects
    • B60Q3/62—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/70—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
    • B60Q3/74—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps
    • B60Q3/745—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps using lighting panels or mats, e.g. electro-luminescent panels, LED mats
    • 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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • 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
    • 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
    • G02B6/0055—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
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0085—Means for removing heat created by the light source from the package
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide

Definitions

  • the uniform lighting device may further comprise a diffuser arranged to diffuse light exiting the light output surface.
  • An air gap may be incorporated between the diffuser and the light output surface.
  • the diffuser may be optically bonded to the light output surface.
  • the uniform lighting device may further comprise a reflector arranged such that the planar light-guide is located between the reflector and the light output surface.
  • the reflector may be located within the non-coupled light region to reflect uncoupled light rays towards the light output surface.
  • the reflector recycles light and improves efficiency.
  • the reflector can be separated from the light-guide by an air gap or attached onto the surface.
  • the reflector can be attached with a low refractive index layer, which increases the Numerical Aperture of the light-guide attached to the reflector.
  • Embodiments of the second aspect of the invention may include one or more features of the first aspect of the invention or its embodiments, or vice versa.
  • the light reduction medium 16 preferably comprises an ink layer, a dye layer, a thin film or other absorbing or reflecting medium or material.
  • the light reduction medium 16 may comprise a specular or non-specular reflector, such as a metal film or white ink. If a black absorption ink is employed this may be printed to be semi-transparent or with small holes, to allow a small amount of light to be emitted and so avoid a “dark spot” artefact being seen by an observer 9.
  • the first difference between the uniform lighting device 13 presented in Figure 5 and the uniform lighting device 18 presented in Figure 6 is the inclusion of a transparent substrate 19 employed to act as a carrier for the light sources 2 and the light extracting medium 17.
  • a transparent substrate 19 employed to act as a carrier for the light sources 2 and the light extracting medium 17.
  • the refractive index of the transparent substrate 19 it is preferable for the refractive index of the transparent substrate 19 to be less than or equal to the refractive index of the planar light guide 3.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

Est divulgué, un dispositif d'éclairage uniforme comprenant des sources de lumière incorporées dans un guide de lumière planaire. Le dispositif d'éclairage uniforme incorpore un milieu de réduction de lumière situé sur le guide de lumière planaire, dont la fonction est de réduire l'intensité des rayons lumineux générés par les sources de lumière, et qui ne sont pas couplés dans le guide de lumière planaire, avant qu'ils ne sortent d'une surface de sortie de lumière du dispositif. Un milieu d'extraction de lumière est également situé sur le guide de lumière planaire, dont la fonction est d'extraire les rayons lumineux générés par les sources lumineuses, et qui sont couplés dans le guide de lumière planaire, par l'intermédiaire de la surface de sortie de lumière. Ces caractéristiques se combinent pour fournir un dispositif d'éclairage ayant une sortie de lumière hautement uniforme. La structure de dispositif d'éclairage uniforme signifie qu'il peut être fabriqué sous la forme d'un dispositif très mince, ce qui le rend particulièrement approprié pour une utilisation dans le domaine du transport.
PCT/GB2020/052954 2019-11-20 2020-11-19 Dispositif d'éclairage uniforme WO2021099789A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1916878.0A GB2589110B (en) 2019-11-20 2019-11-20 Uniform lighting device
GB1916878.0 2019-11-20

Publications (1)

Publication Number Publication Date
WO2021099789A1 true WO2021099789A1 (fr) 2021-05-27

Family

ID=69063159

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2020/052954 WO2021099789A1 (fr) 2019-11-20 2020-11-19 Dispositif d'éclairage uniforme

Country Status (2)

Country Link
GB (1) GB2589110B (fr)
WO (1) WO2021099789A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3129330B1 (fr) * 2021-11-23 2024-02-09 Faurecia Interieur Ind Elément de garnissage comprenant des zones rétroéclairées commutables

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040136173A1 (en) 2002-12-20 2004-07-15 Kun-Jung Tsai Surface light source device for liquid crystal display
EP1533633A1 (fr) * 2003-11-21 2005-05-25 Kabushiki Kaisha Toyota Jidoshokki Dispositif d'illumination planaire
WO2007138294A1 (fr) 2006-05-26 2007-12-06 Design Led Products Limited Dispositif de guidage de lumière composite
US20090128735A1 (en) * 2007-11-19 2009-05-21 Honeywell International, Inc. Backlight systems for liquid crystal displays
US20100265694A1 (en) * 2009-04-21 2010-10-21 Kim Sungwoo Light emitting device
EP2679886A2 (fr) * 2012-06-27 2014-01-01 LG Innotek Co., Ltd. Dispositif d'éclairage
US20170097456A1 (en) * 2015-10-02 2017-04-06 Korea Advanced Institute Of Science And Technology Backlight unit capable of local dimming
WO2017178701A1 (fr) * 2016-04-13 2017-10-19 Tactotek Oy Structure multicouche éclairée à sources lumineuses intégrées

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KR100665011B1 (ko) * 2004-11-08 2007-01-09 삼성전기주식회사 발광 다이오드를 이용한 백라이트 장치
JP5667888B2 (ja) * 2010-12-13 2015-02-12 日立マクセル株式会社 バックライトユニット及びこれを用いた映像表示装置
WO2012091255A1 (fr) * 2010-12-28 2012-07-05 Lg Electronics Inc. Appareil d'affichage
US9442243B2 (en) * 2013-01-30 2016-09-13 Cree, Inc. Waveguide bodies including redirection features and methods of producing same
WO2020101517A1 (fr) * 2018-11-12 2020-05-22 Corning Incorporated Rétroéclairage comprenant des réflecteurs à motifs et procédé de fabrication du rétroéclairage
DE102019111542B4 (de) * 2019-05-03 2022-03-10 Hib Trim Part Solutions Gmbh Gleichmäßig beleuchtbares Zierteil
CN114616498A (zh) * 2019-08-23 2022-06-10 瑞尔D斯帕克有限责任公司 定向照明设备和防窥显示器

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040136173A1 (en) 2002-12-20 2004-07-15 Kun-Jung Tsai Surface light source device for liquid crystal display
EP1533633A1 (fr) * 2003-11-21 2005-05-25 Kabushiki Kaisha Toyota Jidoshokki Dispositif d'illumination planaire
WO2007138294A1 (fr) 2006-05-26 2007-12-06 Design Led Products Limited Dispositif de guidage de lumière composite
US20090128735A1 (en) * 2007-11-19 2009-05-21 Honeywell International, Inc. Backlight systems for liquid crystal displays
US20100265694A1 (en) * 2009-04-21 2010-10-21 Kim Sungwoo Light emitting device
EP2679886A2 (fr) * 2012-06-27 2014-01-01 LG Innotek Co., Ltd. Dispositif d'éclairage
US20170097456A1 (en) * 2015-10-02 2017-04-06 Korea Advanced Institute Of Science And Technology Backlight unit capable of local dimming
WO2017178701A1 (fr) * 2016-04-13 2017-10-19 Tactotek Oy Structure multicouche éclairée à sources lumineuses intégrées

Also Published As

Publication number Publication date
GB2589110B (en) 2022-11-09
GB201916878D0 (en) 2020-01-01
GB2589110A (en) 2021-05-26

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