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. 28, 2015
Filed:
Aug. 09, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Toshihiro Okuda, Utsunomiya, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
The lens apparatus includes a first member having a first cam, a second member having a first cam follower engaging with the first cam and a second cam follower, which rotates in a circumferential direction and is moved in an optical axis direction by the first cam, a third member provided with a second cam engaging with the second cam follower and rotating the second member, and biasing members generating between the first and second members a biasing force in a direction oblique to the optical axis direction. The biasing force presses the first and second cam followers respectively against the first and second cams. A biasing force generation direction changes with rotation of the second member, and the biasing force presses the first and second cam followers respectively against same cam surfaces of the first and second cams in an entire second member rotation range.