The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2020
Filed:
Jan. 22, 2016
Applicant:
Nippon Electric Glass Co., Ltd., Otsu-shi, Shiga, JP;
Inventor:
Tadahito Furuyama, Otsu, JP;
Assignee:
NIPPON ELECTRIC GLASS CO., LTD., Shiga, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 9/32 (2018.01); F21V 9/30 (2018.01); F21V 9/40 (2018.01); C04B 41/85 (2006.01); F21V 7/22 (2018.01); G03B 21/20 (2006.01); G03B 21/00 (2006.01); G02B 26/00 (2006.01); G03B 21/16 (2006.01); H04N 9/31 (2006.01); H01L 33/64 (2010.01); H01L 33/50 (2010.01); H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
F21V 9/30 (2018.02); C04B 41/85 (2013.01); F21V 7/22 (2013.01); F21V 9/40 (2018.02); G02B 26/008 (2013.01); G03B 21/00 (2013.01); G03B 21/16 (2013.01); G03B 21/204 (2013.01); H01L 33/647 (2013.01); H04N 9/3144 (2013.01); H04N 9/3158 (2013.01); H01L 33/50 (2013.01); H01S 5/005 (2013.01);
Abstract
A wheel-shaped wavelength conversion member includes a first porous ceramic layer having a porosity of at least 20% by volume, a phosphor layer formed on a first principal surface of the first porous ceramic layer, a ceramic heat dissipation layer having a porosity of 20% or less by volume provided on a second principal surface of the first porous ceramic layer opposite the first principal surface, and a second porous ceramic layer having a porosity of at least 20% by volume provided on a surface of the heat dissipation layer opposite the first porous ceramic layer.