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1. WO2013047060 - LIGHT-GUIDING PLATE

Publication Number WO/2013/047060
Publication Date 04.04.2013
International Application No. PCT/JP2012/071824
International Filing Date 29.08.2012
IPC
F21S 2/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
2Systems of lighting devices, not provided for in main groups F21S4/-F21S10/113
G02F 1/13357 2006.1
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
13357Illuminating devices
F21Y 101/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V124
101Point-like light sources
02Miniature, e.g. light emitting diodes (LED)
CPC
G02B 6/0016
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0013Means for improving the coupling-in of light from the light source into the light guide
0015provided on the surface of the light guide or in the bulk of it
0016Grooves, prisms, gratings, scattering particles or rough surfaces
G02B 6/0041
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0033Means for improving the coupling-out of light from the light guide
0035provided on the surface of the light guide or in the bulk of it
004Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
0041provided in the bulk of the light guide
G02B 6/0055
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0033Means for improving the coupling-out of light from the light guide
005provided by one optical element, or plurality thereof, placed on the light output side of the light guide
0055Reflecting element, sheet or layer
G02B 6/0061
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0033Means for improving the coupling-out of light from the light guide
0058varying in density, size, shape or depth along the light guide
0061to provide homogeneous light output intensity
G02B 6/0088
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0081Mechanical 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
0086Positioning aspects
0088of the light guide or other optical sheets in the package
G02B 6/009
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
0001specially adapted for lighting devices or systems
0011the light guides being planar or of plate-like form
0081Mechanical 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
0086Positioning aspects
009of the light source in the package
Applicants
  • 富士フイルム株式会社 FUJIFILM Corporation [JP]/[JP] (AllExceptUS)
  • 岩崎 修 IWASAKI Osamu [JP]/[JP] (UsOnly)
Inventors
  • 岩崎 修 IWASAKI Osamu
Agents
  • 渡辺 望稔 WATANABE Mochitoshi
Priority Data
2011-21068027.09.2011JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) LIGHT-GUIDING PLATE
(FR) PLAQUE DE GUIDAGE DE LUMIÈRE
(JA) 導光板
Abstract
(EN) The purpose of the present invention is to provide a light-guiding plate which has a large and thin shape and high light use efficiency, can emit light with low unevenness in luminance, can obtain a convex or bell-shaped brightness distribution, and is easily manufactured. This light-guiding plate has two layers with different particle concentrations of scattered particles, the combined particle concentration of the light-guiding plate changes by the respective changes of the thicknesses of the two layers, and 0.3mm≤Tlg≤4mm and 0.3≤tcen/Tlg≤1 are satisfied where Tlg is the thickness in the direction perpendicular to a light emitting surface and tcen is the maximum thickness of the second layer.
(FR) La présente invention vise à procurer une plaque de guidage de lumière qui a une forme grande et mince et un rendement d'utilisation de la lumière élevé, qui peut émettre de la lumière avec une faible irrégularité de luminance, qui peut obtenir une distribution de luminosité convexe ou en forme de cloche, et qui est facile à fabriquer. A cet effet, l'invention porte sur une plaque de guidage de lumière, laquelle plaque a deux couches avec des concentrations de particules différentes de particules dispersées, la concentration de particules combinée de la plaque de guidage de lumière changeant du fait des changements respectifs des épaisseurs des deux couches, et 0,3 mm ≤ Tlg ≤ 4 mm et 0,3 ≤ tcen/Tlg ≤ 1 sont satisfaites quand Tlg est l'épaisseur dans la direction perpendiculaire à une surface d'émission de lumière et tcen est l'épaisseur maximale de la seconde couche.
(JA)  本発明は、大型、薄型な形状で、光の利用効率が高く、輝度むらが少ない光を出射することができ、中高なあるいは釣鐘状の明るさの分布を得ることができ、かつ、製造が容易な導光板を提供することを目的とする。本発明の導光板は、散乱粒子の粒子濃度が異なる2つの層を有し、2つの層の厚さがそれぞれ変化して、導光板の合成粒子濃度が変化し、かつ、光出射面に垂直な方向の厚さをTlgとし、第2層の最大厚さをtcenとすると、0.3mm≦Tlg≦4mm、0.3≦tcen/Tlg≦1を満たす。
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