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:
Mar. 08, 2011
Filed:
Jun. 30, 2008
Applicants:
Kazuo Aoki, Chino, JP;
Kazuhiro Nakazawa, Azumino, JP;
Inventors:
Kazuo Aoki, Chino, JP;
Kazuhiro Nakazawa, Azumino, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A projector with a specially manufactured optical compensation element is disclosed. One method of manufacturing the optical compensation element temporarily attaches an inorganic substrate made of a birefringent inorganic material to a base member with a temporary bond, grinds/polishes the inorganic substrate, attaches a light transmissive support substrate to a surface of the inorganic substrate on the opposite side to the side of the base member, and separates the inorganic substrate with the light transmissive support substrate from the base member.