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. 17, 2020
Filed:
Jan. 23, 2019
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Tomohiro Nakamura, Yoshikawa, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01); G02B 27/28 (2006.01);
U.S. Cl.
CPC ...
G03B 21/2093 (2013.01); G03B 21/2073 (2013.01);
Abstract
An illumination apparatus includes a light source, a polarization conversion element configured to convert light from the light source into polarized light having a specific polarization direction and to emit the polarized light to an illumination surface, and a photosensor configured to receive light emitted from a surface different from an incident surface and an exit surface of the polarization conversion element.
Nakamura, Tomohiro. (2020). Illumination apparatus and image projection apparatus (U.S. Patent No. 10591813). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10591813
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile