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Patent Searching and Data


Title:
WAVELENGTH CONVERSION MEMBER AND LIGHT SOURCE DEVICE PROVIDED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2022/163175
Kind Code:
A1
Abstract:
Provided is a technology for suppressing a decrease in the adhesion strength of a reflection film and suppressing a reduction in the reflectance of the reflection film in a wavelength conversion member. A wavelength conversion member 1 comprises a phosphor 10 that emits fluorescence by excitation light L1, and a reflection film 20 disposed on the second surface 12 side of the phosphor 10. The reflection film 20 comprises a metallic layer 21 of silver or the like, and crystalline oxide particles 22 dispersed in the metallic layer 21. The melting point of the oxide particles 22 is higher than the melting point of the metal constituting the metallic layer 21.

Inventors:
YATSUYA YOSUKE (JP)
SAKURAI TOSHIYUKI (JP)
TAKAKU SHOHEI (JP)
YAMAUCHI HIROKI (JP)
TANAKA TOMOO (JP)
TAKEUCHI HIROKI (JP)
BAN SHINJI (JP)
Application Number:
PCT/JP2021/045813
Publication Date:
August 04, 2022
Filing Date:
December 13, 2021
Export Citation:
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Assignee:
NGK SPARK PLUG CO (JP)
International Classes:
G02B5/20; F21V7/30; F21V9/30; G02B5/08; F21Y115/10; F21Y115/30
Foreign References:
JP2019159175A2019-09-19
JP2011530789A2011-12-22
JP2019053130A2019-04-04
Attorney, Agent or Firm:
KAWAKITA Kijuro et al. (JP)
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