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. 13, 2008
Filed:
Jul. 29, 2005
Applicants:
Ryuichi Sakaguchi, Machida, JP;
Keiichiro Ishihara, Yokohama, JP;
Inventors:
Ryuichi Sakaguchi, Machida, JP;
Keiichiro Ishihara, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/28 (2006.01); G03B 21/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A compact displaying optical system capable of reducing a speckle noise and a loss of light amount is disclosed. The displaying optical system which projects images using coherent light, comprises a light source which emits the light; and a polarization control unit. The polarization control unit changes the polarization state of the light emitted from the light source temporally.
Sakaguchi, Ryuichi. (2008). Displaying optical system and image projection apparatus (U.S. Patent No. 7370973). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7370973
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile