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:
Apr. 26, 2016
Filed:
Feb. 04, 2014
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Hidefumi Sakata, Tatsuno-cho, JP;
Shunji Kamijima, Hara-mura, JP;
Akira Miyamae, Fujimi-machi, JP;
Shuji Narimatsu, Suwa, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01); G02B 26/00 (2006.01); G03B 21/28 (2006.01); G03B 33/12 (2006.01); G02B 7/00 (2006.01); G03B 21/20 (2006.01); G03B 33/08 (2006.01); F21V 9/08 (2006.01);
U.S. Cl.
CPC ...
G02B 26/008 (2013.01); F21V 9/08 (2013.01); G02B 7/008 (2013.01); G03B 21/142 (2013.01); G03B 21/204 (2013.01); G03B 21/28 (2013.01); G03B 33/08 (2013.01); G03B 33/12 (2013.01); G02B 26/007 (2013.01); H04N 2209/043 (2013.01);
Abstract
An illumination device includes: a light source device adapted to emit an excitation light beam; and a rotating fluorescent plate having a single fluorescent layer adapted to convert a part or whole of the excitation light beam into a fluorescent light beam. The fluorescent light beam includes two or more colored light beams, and the single fluorescent layer is formed on a circular disk, which can be rotated by a motor, continuously along a circumferential direction of the circular disk.