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:
Sep. 15, 2015
Filed:
May. 24, 2011
Applicant:
Hiroaki Yanai, Matsumoto, JP;
Inventor:
Hiroaki Yanai, Matsumoto, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01); G02B 27/28 (2006.01); G03B 21/20 (2006.01); H04N 9/31 (2006.01); G02B 27/48 (2006.01);
U.S. Cl.
CPC ...
G02B 27/285 (2013.01); G03B 21/204 (2013.01); G03B 21/2033 (2013.01); G03B 21/2073 (2013.01); H04N 9/3161 (2013.01); H04N 9/3167 (2013.01); G02B 27/48 (2013.01);
Abstract
A light source device which can prevent deterioration of a polarization rotation element and an adhesive for bonding the polarization rotation element is to be provided. A light source device includes a polarization separation element obtaining first polarization and second polarization by separation and a polarization rotation element converting a polarization component aligned in a second polarization direction into a polarization component aligned in a first polarization direction.