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:
Aug. 19, 2025
Filed:
Oct. 13, 2022
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Satoshi Ito, Tochigi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/08 (2006.01); G02C 13/00 (2006.01); G02F 1/00 (2006.01); G02F 1/01 (2006.01); G02F 1/03 (2006.01); G02F 1/1333 (2006.01);
U.S. Cl.
CPC ...
G02C 7/08 (2013.01); G02C 13/001 (2013.01); G02F 1/0045 (2013.01); G02F 1/0123 (2013.01); G02F 1/0316 (2013.01); G02F 1/133345 (2013.01);
Abstract
An optical element is switchable between a first state having a first focal length and a second state having a second focal length. The optical element includes a first electrode layer, an insulation layer, a resistance layer, a liquid crystal layer, and a second electrode layer, which are arranged in order. An electric resistance ratio of the resistance layer increases from a central part to a peripheral part.