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. 16, 2017
Filed:
Feb. 03, 2016
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Satoshi Ito, Utsunomiya, JP;
Hironobu Koga, Utsunomiya, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/08 (2006.01); G02B 5/22 (2006.01); G02B 5/20 (2006.01); G03B 11/00 (2006.01); G03B 9/02 (2006.01); G03B 17/14 (2006.01);
U.S. Cl.
CPC ...
G02B 5/20 (2013.01); G03B 9/02 (2013.01); G03B 11/00 (2013.01); G03B 17/14 (2013.01);
Abstract
An optical system includes a plurality of lenses, a diaphragm configured to adjust a light amount, and an optical element having a transmittance distribution. A transmittance of the optical element satisfies predetermined conditions. In addition, another predetermined condition is satisfied when the diaphragm is fully opened.
Ito, Satoshi. (2017). Optical system and optical apparatus (U.S. Patent No. 9651722). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9651722
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile