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1. (WO2018037760) WAVELENGTH CONVERSION MEMBER

Pub. No.:    WO/2018/037760    International Application No.:    PCT/JP2017/025719
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Sat Jul 15 01:59:59 CEST 2017
IPC: C03C 3/064
C03C 3/066
C03C 3/068
C03C 3/089
C03C 3/091
C03C 3/093
C03C 3/095
C03C 4/12
C03C 14/00
Applicants: CENTRAL GLASS COMPANY, LIMITED
セントラル硝子株式会社
Inventors: KIDA, Takahisa
木田 貴久
NAKANO, Yuki
中野 雄貴
Title: WAVELENGTH CONVERSION MEMBER
Abstract:
Provided is a wavelength conversion member having phosphor powder in a glass layer of SiO2-B2O3-RO glass, the wavelength conversion member being characterized in that the composition of the glass layer includes, in mol%, 10 to 70 of SiO2, 6 to 35 of B2O3, 0 to 48 of ZnO, and a total of 1 to 45 of RO (RO is at least one selected from the group consisting of BaO, CaO, MgO, and SrO), and is substantially free of Li2O, Na2O, and K2O, and in that in the composition, B2O3/(ZnO+RO) is 0.2 to 0.8. According to the present invention, a glass sealing material can be obtained in which reduction of emission intensity over time is suppressed.