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:
Dec. 08, 2015
Filed:
Feb. 04, 2013
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Akihiro Kashiwagi, Shiojiri, JP;
Shigeo Nojima, Azumino, JP;
Akira Miyamae, Suwa-gun, JP;
Akira Egawa, Shiojiri, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01); H04N 9/31 (2006.01); F21V 9/16 (2006.01); H05B 33/14 (2006.01);
U.S. Cl.
CPC ...
F21V 9/16 (2013.01); G03B 21/204 (2013.01); H04N 9/3158 (2013.01); H05B 33/14 (2013.01); H04N 9/3111 (2013.01);
Abstract
A wavelength conversion element includes a substrate, and a fluorescent material layer disposed on the substrate. The volume concentration of the fluorescent material in the fluorescent material layer is equal to or higher than 15 vol %.