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:
Apr. 03, 2012
Filed:
May. 17, 2009
Mikio Sakai, Utsunomiya, JP;
Mikio Sakai, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A shooting optical system for performing flange back adjustment by moving a lens unit included in the shooting optical system in an optical axis direction includes: a drive gear engaging a lens holding frame for holding the lens unit; a drive unit for rotating the drive gear; a first gear rotating relatively to the drive gear; an operation unit for the flange back adjustment, for rotating the first gear; a detection unit for detecting a relative positional relationship between the first gear and the drive gear; and a control unit for driving the drive unit so as to rotate the drive gear based on a detection signal detected by the detection unit, thereby moving the lens holding frame in the optical axis direction so that the flange back adjustment is performed.