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:
Nov. 04, 2003
Filed:
Feb. 12, 2003
Hiroshi Nomura, Saitama, JP;
Yoshihiro Yamazaki, Saitama, JP;
Isao Okuda, Saitama, JP;
Satoru Nakamura, Tokyo, JP;
Pentax Corporation, Tokyo, JP;
Abstract
A lens barrel includes a movable lens frame and a cam ring for moving the movable lens frame in a direction of an optical axis via a movement of the cam ring which is rotatable about the optical axis and movable in the direction thereof. The lens barrel includes a stationary ring provided around, and coaxial with, the cam ring; a rotatable ring provided around, and coaxial with, the stationary barrel, the rotatable ring being driven to rotate about the optical axis. A cam follower extends radially outwards from the cam ring, and a cam through-slot and a rotation transfer groove which are formed on the stationary ring and the rotatable ring, respectively, so that the cam follower is engaged in the cam through-slot and corresponding rotation transfer groove. The cam through-slot includes a linear and an inclined slot portion.