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. 12, 2015
Filed:
Aug. 15, 2013
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Yutaka Iriyama, Saitama, JP;
Assignee:
Canon Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 27/00 (2006.01); G02B 1/11 (2006.01);
U.S. Cl.
CPC ...
G02B 1/11 (2013.01); G02B 27/00 (2013.01); G02B 1/118 (2013.01);
Abstract
Lens apparatus includes adjacent concave and convex lens surfaces adjacent with an air layer therebetween. At least one of the lens surfaces includes an antireflection film including multiple subwavelength structures at an average pitch of 400 nm or smaller. The surface satisfies:0.7<<1.3, and|θ−θ|>15°,provided that:No,θ=sin(/(2×)), andθ=sin(()/),
Iriyama, Yutaka. (2015). Lens apparatus and image pickup apparatus including the same (U.S. Patent No. 9028078). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9028078
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile