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:
Jan. 15, 2013
Filed:
Oct. 13, 2010
Tomoaki Yamanaka, Utsunomiya, JP;
Tomoaki Yamanaka, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical system of the present invention includes a storage unit which stores an operated position of an operation unit and a position of an optical member. When the power supply to the optical system terminates and then restarts, a control unit compares the stored operated position and the operated position detected by a first sensing unit upon restart. If they are different, the control unit controls a driving unit such that the position of the optical member detected by a second sensing unit can be a target position. If they are the same, the control unit controls the driving unit such that the position of the optical member detected by the second sensing unit can be the stored position of the optical member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile