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. 19, 2001
Filed:
Aug. 31, 1999
Kenji Hirose, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical apparatus of the present invention is characterized by having a stationary portion, a movable portion having an optical member and a semi-cylindrical shape, the movable portion being rotationally movable relative to the stationary portion, a hydrostatic bearing for supporting a semi-cylindrical surface of the movable portion without contact with the stationary portion, and an actuator for actuating the movable portion relative to the stationary portion without contact therewith in a direction of rotation. The optical member is supported and driven in a non-contact state, so as to reduce positional deviation of rotation center of the optical member and decrease friction torque, thereby providing the optical apparatus that can act at high accuracy and at high speed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile