+

WO2008107584A3 - Illuminating structure and optical structure - Google Patents

Illuminating structure and optical structure Download PDF

Info

Publication number
WO2008107584A3
WO2008107584A3 PCT/FR2008/050037 FR2008050037W WO2008107584A3 WO 2008107584 A3 WO2008107584 A3 WO 2008107584A3 FR 2008050037 W FR2008050037 W FR 2008050037W WO 2008107584 A3 WO2008107584 A3 WO 2008107584A3
Authority
WO
WIPO (PCT)
Prior art keywords
diffusing
substrate
layer
light sources
optical
Prior art date
Application number
PCT/FR2008/050037
Other languages
French (fr)
Other versions
WO2008107584A2 (en
Inventor
Michele Schiavoni
Franck Marandon
Patrick Gayout
Original Assignee
Saint Gobain
Michele Schiavoni
Franck Marandon
Patrick Gayout
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 Saint Gobain, Michele Schiavoni, Franck Marandon, Patrick Gayout filed Critical Saint Gobain
Publication of WO2008107584A2 publication Critical patent/WO2008107584A2/en
Publication of WO2008107584A3 publication Critical patent/WO2008107584A3/en

Links

Classifications

    • 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
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • 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
    • G02B5/0294—Diffusing elements; Afocal elements characterized by the use adapted to provide an additional optical effect, e.g. anti-reflection or filter
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/305—Flat vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • 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
    • G02F1/133604—Direct backlight with lamps
    • 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention relates to an illuminating structure (1) comprising a plurality of light sources (11) lying in a plane, and a diffusing structure comprising a transparent substrate (20) having first and second main faces, the substrate being opposite the light sources and being at a distance of less than 6 mm from the sources, a diffusing layer (22) on one of the main faces of said substrate, the diffusing layer, called inhomogeneous layer, having a variable thickness and/or a variable covering density. The invention also relates to an optical structure (20) having a diffusing structure intended to homogenize a plurality of light sources lying in a plane, which diffusing structure comprises the transparent substrate (21) and the inhomogeneous diffusing layer (22), and a stack of optical elements (23) on one of the faces of the substrate and chosen from: one or more diffusing films; a diffusing film and an element for redirecting the light towards the normal to the substrate and a diffusing film; or a diffusing film and a reflective polarizer.
PCT/FR2008/050037 2007-01-09 2008-01-09 Illuminating structure and optical structure WO2008107584A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0752586 2007-01-09
FR0752586A FR2911192A1 (en) 2007-01-09 2007-01-09 Backlight system`s light source e.g. LED, uniformizing structure for liquid crystal display screen, has substrate`s face with roughness defined by roughness profile produced with Gaussian filter with specific cut-off and measurement length

Publications (2)

Publication Number Publication Date
WO2008107584A2 WO2008107584A2 (en) 2008-09-12
WO2008107584A3 true WO2008107584A3 (en) 2008-11-06

Family

ID=37946258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2008/050037 WO2008107584A2 (en) 2007-01-09 2008-01-09 Illuminating structure and optical structure

Country Status (2)

Country Link
FR (1) FR2911192A1 (en)
WO (1) WO2008107584A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009022225A1 (en) 2009-05-20 2010-11-25 Zumtobel Lighting Gmbh Lighting arrangement with variable light influencing element
KR101696004B1 (en) * 2009-12-17 2017-01-12 키모토 컴파니 리미티드 Light diffusing sheet and backlight using same
EP3567306A1 (en) * 2018-05-08 2019-11-13 Automotive Lighting Italia S.p.A. Automotive lighting and/or signaling device
EP3567307A1 (en) * 2018-05-08 2019-11-13 Automotive Lighting Italia S.p.A. Automotive lighting and/or signaling device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1126312A2 (en) * 2000-02-14 2001-08-22 Nitto Denko Corporation Reflector and liquid-crystal display device
WO2001090787A1 (en) * 2000-05-23 2001-11-29 Saint-Gobain Glass France Diffusing coating
WO2002048760A1 (en) * 2000-12-15 2002-06-20 De La Rue International Limited Diffuse reflector and method
US20020141065A1 (en) * 2000-08-01 2002-10-03 James Cowan Directional diffuser
EP1400838A1 (en) * 2002-09-19 2004-03-24 Rolic AG Thin films with corrugated surface topologies and method to produce them
FR2881844A1 (en) * 2005-02-09 2006-08-11 Saint Gobain DIFFUSING STRUCTURE WITH ABSORPTION PROPERTIES IN ULTRAVIOLET

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1126312A2 (en) * 2000-02-14 2001-08-22 Nitto Denko Corporation Reflector and liquid-crystal display device
WO2001090787A1 (en) * 2000-05-23 2001-11-29 Saint-Gobain Glass France Diffusing coating
US20020141065A1 (en) * 2000-08-01 2002-10-03 James Cowan Directional diffuser
WO2002048760A1 (en) * 2000-12-15 2002-06-20 De La Rue International Limited Diffuse reflector and method
EP1400838A1 (en) * 2002-09-19 2004-03-24 Rolic AG Thin films with corrugated surface topologies and method to produce them
FR2881844A1 (en) * 2005-02-09 2006-08-11 Saint Gobain DIFFUSING STRUCTURE WITH ABSORPTION PROPERTIES IN ULTRAVIOLET

Also Published As

Publication number Publication date
WO2008107584A2 (en) 2008-09-12
FR2911192A1 (en) 2008-07-11

Similar Documents

Publication Publication Date Title
TW200632369A (en) Optical sheet, backlight unit and display
US8353613B2 (en) Light guide plate and display apparatus comprising the same
US8870436B2 (en) Patterned adhesives for reflectors
WO2005091887A3 (en) Euv light source optical elements
TW200745624A (en) Wide angle mirror system
WO2008045207A3 (en) Light guide
US20100048085A1 (en) Lightguide plate and lightguide plate manufacturing method
DE60234365D1 (en) MICROSTRUCTURED LIGHTING SYSTEM FOR PROVIDING POLARIZED LIGHT
WO2007115041A3 (en) Structured composite optical films
WO2009034992A1 (en) Optical sheet, display device and optical sheet manufacturing method
WO2008099728A1 (en) Optical package , method for manufacturing the same, illuminator, and display
WO2007117935A3 (en) Structured composite optical films
TW200801611A (en) Reflective polarizer with polarization splitting microstructure
WO2005016842A3 (en) Transparent substrate comprising an antireflection coating
TW200643476A (en) Thick film multilayer reflector with tailored layer thickness profile
FR2898295B1 (en) TRANSPARENT ANTIREFLECTION SUBSTRATE WITH NEUTRAL COLOR IN REFLECTION
WO2004005210A3 (en) Transparent substrate comprising antiglare coating
TW200728841A (en) Polarizing turning film with multiple operating orientations
WO2008139914A1 (en) Reflective screen and front-projection display system
TW200743863A (en) Backlight module and light guide plate used in the same
US9958596B2 (en) Display device, multilayer light guide plate structure and front light module
WO2008107584A3 (en) Illuminating structure and optical structure
WO2009004696A1 (en) Lens sheet, optical sheet for display, and backlight unit and display apparatus using the same
WO2008029128A3 (en) Security device based on customised microprism device
JP2010026280A (en) Liquid crystal display device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08761911

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08761911

Country of ref document: EP

Kind code of ref document: A2

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载