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. 05, 2019
Filed:
Feb. 21, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Keiko Abe, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01); G02B 1/11 (2015.01); B29D 11/00 (2006.01); G02B 1/118 (2015.01); G02B 27/00 (2006.01);
U.S. Cl.
CPC ...
G02B 1/11 (2013.01); B29D 11/00 (2013.01); B29D 11/00884 (2013.01); G02B 1/118 (2013.01); G02B 27/0018 (2013.01); B29D 11/00009 (2013.01); B29D 11/00432 (2013.01);
Abstract
An optical element is provided that includes a base having a smooth surface and a rough surface on one surface thereof, an antireflection film having an irregularity structure on a surface of the antireflection film over the smooth surface of the base, and a light shielding film over the rough surface, wherein the irregularity structure of the antireflection film has an average height of 50 nm or less in an overlapping portion, in which an edge portion of the antireflection film and an edge portion of the light shielding film overlap each other over the smooth surface.