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:
May. 16, 2017
Filed:
Jan. 14, 2015
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Osamu Arakawa, Shiojiri, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01); H01L 33/50 (2010.01); H01L 33/48 (2010.01); H01L 33/60 (2010.01);
U.S. Cl.
CPC ...
G03B 21/204 (2013.01); H01L 33/505 (2013.01); G03B 21/2066 (2013.01); H01L 33/486 (2013.01); H01L 33/60 (2013.01);
Abstract
A light source device includes a phosphor layer having a side surface, a bottom surface, and an upper surface opposed to the bottom surface, a substrate disposed on the bottom surface side of the phosphor layer, and a reflecting member disposed outside the phosphor layer. The phosphor layer generates fluorescence in response to irradiation with excitation light. The fluorescence generated in the phosphor layer is emitted from the upper surface and the side surface. The fluorescence emitted from the side surface enters the reflecting member.