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Title:
WAVELENGTH CONVERSION ELEMENT, WAVELENGTH CONVERSION DEVICE, AND LIGHT-EMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/111724
Kind Code:
A1
Abstract:
Provided is a wavelength conversion element having excellent thermal conductivity and high luminous efficacy. The wavelength conversion element includes: a binder; a plurality of fluorescent particles that are scattered inside the binder, receive excitation light, and emit light in a prescribed wavelength band; and a plurality of gaps scattered inside the binder. At least some of the gaps comprise a first coating film formed from a metal alkoxide, upon at least some inner wall surfaces.

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Inventors:
KANNO TORU
AOMORI SHIGERU
YUI HIDEOMI
UEKI TOMOKO
Application Number:
PCT/JP2020/037834
Publication Date:
June 10, 2021
Filing Date:
October 06, 2020
Export Citation:
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Assignee:
SHARP KK (JP)
International Classes:
G03B21/14; F21S2/00; F21S41/32; F21V9/30; G02B5/20
Domestic Patent References:
WO2019004064A12019-01-03
WO2013047876A12013-04-04
Foreign References:
JP2004088013A2004-03-18
JP2013026161A2013-02-04
JPH06251876A1994-09-09
Attorney, Agent or Firm:
INOUE Tomoya (JP)
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