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1. WO2020116045 - OPTICAL LAMINATE

Publication Number WO/2020/116045
Publication Date 11.06.2020
International Application No. PCT/JP2019/041368
International Filing Date 21.10.2019
IPC
G02F 1/13357 2006.01
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
F21S 2/00 2016.01
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
G02B 6/00 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
Applicants
  • 日東電工株式会社 NITTO DENKO CORPORATION [JP]/[JP]
Inventors
  • 森島 諒太 MORISHIMA Ryota
  • 服部 大輔 HATTORI Daisuke
Agents
  • 籾井 孝文 MOMII Takafumi
Priority Data
2018-22942006.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) OPTICAL LAMINATE
(FR) STRATIFIÉ OPTIQUE
(JA) 光学積層体
Abstract
(EN)
Provided is an optical laminate having high luminance, suppressed luminance unevenness, and excellent strength as a single-piece object. This optical laminate comprises a light guiding plate (10), and an optical member laminated to the light guiding plate with an adhesion layer (20) interposed therebetween. The adhesion layer is formed in a dot pattern in plan view, and the density of dots has a gradient that increases along a light guiding direction from the light incidence side of the light guiding plate. The optical laminate is provided with low refractive index reinforcement parts (40), respectively, at both ends along the light guiding direction of the light guiding plate.
(FR)
L'invention concerne un stratifié optique ayant une luminance élevée, une irrégularité de luminance supprimée, et une excellente résistance en tant qu'objet monobloc. Ce stratifié optique comprend une plaque de guidage de lumière (10), et un élément optique stratifié sur la plaque de guidage de lumière avec une couche d'adhérence (20) interposée entre eux. La couche d'adhérence est formée selon un motif de points dans une vue en plan, et la densité de points a un gradient qui augmente le long d'une direction de guidage de lumière à partir du côté d'incidence de lumière de la plaque de guidage de lumière. Le stratifié optique est pourvu de parties de renforcement à faible indice de réfraction (40), respectivement, aux deux extrémités le long de la direction de guidage de lumière de la plaque de guidage de lumière.
(JA)
輝度が高く、輝度ムラが抑制され、かつ、一体物としての強度に優れた光学積層体が提供される。 本発明の光学積層体は、導光板(10)と、導光板に接着層(20)を介して積層された光学部材と、を有する。接着層は平面視ドットパターンで形成されており、かつ、ドットの密度が該導光板の入光側から導光方向に沿って大きくなるような勾配を有する。光学積層体は、導光板の導光方向に沿った両端部に低屈折率補強部(40)が設けられている。
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