OPTICAL MEMBER, SURFACE LIGHT SOURCE DEVICE, DISPLAY DEVICE, AND WAVELENGTH CONVERSION SHEET

WIPO Patent Application WO/2023/100959

A1

This optical member comprises: a selective transmission sheet including a selective transmission part; and a wavelength conversion sheet superposed on the selective transmission sheet. The transmittance of the selective transmission part with respect to light having a specific wavelength and entering the selective transmission part at a certain incident angle of more than 0° is greater than the transmittance of the selective transmission part with respect to light having the specific wavelength but entering the selective transmission part at an incident angle of 0°. The wavelength conversion sheet includes a first surface and a second surface opposite to the first surface. At least one of the first and second surfaces includes a protrusion-recess surface. The wavelength conversion sheet contains a wavelength conversion agent that absorbs primary light and emits secondary light. The secondary light has a wavelength different from that of the primary light.

JPS56114210	ILLUMINATOR
JP5370642	lighting equipment
JP4508936	Light source device and projection type display device using the light source device

NISHIKAWA MARII (JP)
GOTO MASAHIRO (JP)
SEKIGUCHI HIROSHI (JP)
HARUKI AKIHITO (JP)

PCT/JP2022/044297

June 08, 2023

November 30, 2022

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DAINIPPON PRINTING CO LTD (JP)

F21S2/00; F21V3/08; F21V7/28; F21V9/20; F21V9/30; G02B5/00; G02B5/02; G02B5/20; G02B5/30; G02F1/1335; G02F1/13357; G09F9/00; F21Y105/16; F21Y115/10

WO2021002247A1

2021-01-07

JP2017222043A	2017-12-21
JP2018128590A	2018-08-16

MIYAJIMA Manabu et al. (JP)

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