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. 12, 2019
Filed:
Apr. 04, 2017
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Junji Kawasaki, Yokohama, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/118 (2015.01); G02B 5/00 (2006.01); G02B 27/00 (2006.01); G02B 1/14 (2015.01);
U.S. Cl.
CPC ...
G02B 1/118 (2013.01); G02B 1/14 (2015.01); G02B 5/003 (2013.01); G02B 27/0018 (2013.01);
Abstract
An optical component has a surface including an optically effective area having an antireflection coating arranged thereon and an adjoining optically non-effective area having a light-shielding coating film arranged thereon. An edge portion of the antireflection coating and an edge portion of the light-shielding coating film overlap with each other to form an overlap area having a width between 0.5 μm and 50 μm. The antireflection coating is formed so as to show a thickness decreasing toward an edge thereof in the overlap area.