Title:
光波長変換部材及び発光装置
Document Type and Number:
Japanese Patent JP6591951
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an optical wavelength conversion member and a light-emitting device achieving both of high fluorescence intensity and high color homogeneity.SOLUTION: A light-emitting device 1 includes a container 3, a light-emitting element 5 and an optical wavelength conversion member 9. The optical wavelength conversion member 9 is made of a ceramic sintered body having a polycrystalline structure essentially comprising a polycrystalline transparent ceramic material having optical anisotropy (such as an alumina crystal) and a fluorescent ceramic material that is a polycrystalline ceramic material having fluorescence (such as an ABO:Ce crystal). The ceramic sintered body has a surface roughness (Ra) of 0.05 to 10 μm on a light incident surface 9a where light enters.SELECTED DRAWING: Figure 1
Inventors:
Yusuke Katsu
Atsushi Mogi
Takahisa Shohei
Atsushi Mogi
Takahisa Shohei
Application Number:
JP2016213221A
Publication Date:
October 16, 2019
Filing Date:
October 31, 2016
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
G02B5/20; C04B35/115; C09K11/00; C09K11/80; F21V9/00; H01L33/50; H01S5/022
Domestic Patent References:
| JP2016138034A | ||||
| JP2008533270A | ||||
| JP2012062459A | ||||
| JP2004146835A |
Foreign References:
| WO2011125422A1 |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation