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. 14, 2009
Filed:
Aug. 11, 2006
Applicants:
Jianmin Chen, Superior, CO (US);
Michael G. Robinson, Boulder, CO (US);
Inventors:
Jianmin Chen, Superior, CO (US);
Michael G. Robinson, Boulder, CO (US);
Assignee:
Real D, Beverly Hills, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
Abstract
Described are tilted compensators for compensating for in-plate and out-of-plane retardances of LC panels in their dark states, including a single tilted biaxial retarder or compound retarder comprising more than one biaxial film, which are effective to compensate both for nonideal polarization effects of LC panels and other optical components in optical projection systems. Also described are tilted compensators for deflecting away from a projection system optical path unwanted reflected light.