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:
Dec. 15, 2020
Filed:
Mar. 26, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Shunsuke Chino, Wako, JP;
Toshiyuki Dobashi, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A lens control apparatus having an imaging optical system including a focus lens includes a lens control unit configured to control a position of a lens of the imaging optical system based on a control driving amount of the lens, an acquisition unit configured to acquire driving information including an actual driving amount of the lens controlled by the lens control unit, and a first correction unit configured to correct the position of the lens based on a difference between the control driving amount and the actual driving amount. The first correction unit corrects the position of the lens by adding or subtracting an amount of correction to or from the control driving amount when the lens control unit next performs the control of the position of the lens, such that the difference decreases.