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:
Nov. 30, 2021
Filed:
Oct. 04, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Shuhei Yamamoto, Tokyo, JP;
Norihiko Ochi, Kawasaki, JP;
Junri Ishikura, Tokyo, JP;
Takeaki Kumagai, Tokyo, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/111 (2015.01); C09D 5/00 (2006.01); C09D 163/00 (2006.01); G02B 7/02 (2021.01); G02B 3/00 (2006.01); G02B 1/10 (2015.01); G02B 5/00 (2006.01);
U.S. Cl.
CPC ...
G02B 1/111 (2013.01); C09D 5/00 (2013.01); C09D 5/002 (2013.01); C09D 163/00 (2013.01); G02B 1/10 (2013.01); G02B 3/00 (2013.01); G02B 5/003 (2013.01); G02B 7/021 (2013.01);
Abstract
An optical element includes a substrate having an optically effective surface and an optically non-effective surface, and a light shielding film disposed over the optically non-effective surface. The optically non-effective surface has an inclined chamfer and a level chamfer that define a ridge portion. The ridge portion is coated with an aliphatic hydrocarbon.