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, 2001
Filed:
Feb. 26, 1998
Hiroyuki Hase, Chigasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical apparatus having a temperature compensating function includes an optical element holding frame arranged to hold an optical element, a support member arranged to support the optical element holding frame for movement in a direction of an optical axis and having a cam for moving the optical element holding frame in the direction of the optical axis, and a correction member arranged to expand or contract in a direction orthogonally intersecting the optical axis according to temperature variation, wherein the optical element holding frame rotates in association with expansion or contraction of the correction member so as to be moved in the direction of the optical axis along the cam of the support member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile