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, 2018
Filed:
Jun. 03, 2011
Shinji Ueda, Utsunomiya, JP;
Shinji Ueda, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An apparatus for angular positioning of a mirror includes a motor that rotates a mirror, a detector that detects a rotational angle of the mirror, and a controller. The controller supplies current to the motor so that the rotational angle of the mirror reaches a target angle, estimates, based on a model representing a relation between a value of current to be supplied to the motor and an angle of inclination of the mirror, the angle of inclination of the mirror to which current is supplied, and if the estimated angle exceeds a predetermined tolerance, adjusts the supply of current to the motor so that the angle of inclination of the mirror falls within the predetermined tolerance.