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:
Mar. 08, 2011
Filed:
Jul. 20, 2009
Seiichi Kashiwaba, Utsunomiya, JP;
Seiichi Kashiwaba, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The lens apparatus includes a guide barrel including a guide groove portion penetrating through a circumferential wall of the guide barrel, and a cam barrel disposed rotatably and including a penetrating cam groove portion penetrating through a circumferential wall of the cam barrel and a non-penetrating cam groove portion not penetrating therethrough. The apparatus further includes a first holding member holding a first optical element and moved in an optical axis direction by the guide groove portion and the penetrating cam groove portion with rotation of the cam barrel, a second holding member holding a second optical element and moved in the optical axis direction by the guide groove portion and the non-penetrating cam groove portion with the rotation of the cam barrel, and an adjusting mechanism used for adjusting a position of one of the first and second optical elements relative to that of the other.