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. 24, 2016
Filed:
Jul. 26, 2013
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Takayuki Matsubara, Chino, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01); F21V 9/14 (2006.01);
U.S. Cl.
CPC ...
G03B 21/2073 (2013.01); F21V 9/14 (2013.01); G03B 21/204 (2013.01); G03B 21/2013 (2013.01); G03B 21/208 (2013.01); G03B 21/2033 (2013.01);
Abstract
A light combiner having a polarization separation film and transmitting P-polarized light from a first light source unit whereas reflecting S-polarized light from a second light source unit forms combined light, and the angle of incidence of the light from the first light source unit and the angle of incidence of the light from the second light source unit with respect to the polarization separation film are each greater than 45°.