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:
Jun. 27, 2017
Filed:
Oct. 20, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Tomohiro Sugaya, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An angular velocity sensor detects a shake of an image pickup apparatus and a signal divide unit divides a shake detection signal to output it to each of a first drive amount calculating unit and a second drive amount calculating unit. A first drive amount and a second drive amount are calculated based on the divided shake detection signal to drive each of a first correction lens and a second correction lens. An aberration determination unit changes a limiter used in a drive amount limiting unit based on the first drive amount and the second drive amount so as not to increase the eccentric aberration of an imaging optical system generated by the movement of the two correction lenses. The drive amount limiting unit limits the drive amount based on the limiter set according to the result of the determination for the aberration to correct the image shake while suppressing the eccentric aberration.