WAVELENGTH CONVERSION MEMBER AND LIGHT SOURCE DEVICE

WIPO Patent Application WO/2023/218964

A1

This wavelength conversion member is characterized by comprising: a fluorescent body that emits fluorescent light by means of excitation light, and has an incident surface in which the excitation light enters, and a back surface positioned on the opposite side from the incident surface; and a reflection film that is disposed on the back surface of the fluorescent body, and is formed of a metal layer and particles included in the metal layer. The wavelength conversion member is characterized in that: the melting point of the particles is higher than the melting point of the metal forming the metal layer; the reflection film has a first surface opposing the back surface of the fluorescent body, and a second surface positioned on the opposite side from the first surface; and the particles are included more in the second surface side than in the first surface side.

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YATSUYA YOSUKE (JP)
BAN SHINJI (JP)
SAKURAI TOSHIYUKI (JP)
TANAKA TOMOO (JP)

PCT/JP2023/016466

November 16, 2023

April 26, 2023

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NITERRA CO LTD (JP)

G02B5/20; F21V9/30; F21V29/502; F21V29/70; G02B5/00; G02B7/182; H05K7/20

WO2020211091A1	2020-10-22
WO2018042826A1	2018-03-08

JP2019159175A	2019-09-19
JP2011530789A	2011-12-22
JP2012190628A	2012-10-04
JP2019525232A	2019-09-05
JP2017224667A	2017-12-21
JP2019053130A	2019-04-04

TANABE Junya et al. (JP)

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