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. 15, 2011
Filed:
Jan. 07, 2010
Naoto Yumiki, Hirakata, JP;
Yutaka Takahashi, Hirakata, JP;
Naoto Yumiki, Hirakata, JP;
Yutaka Takahashi, Hirakata, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A collapsible lens barrel includes a first holding frame () for holding a first lens group (L), a second holding frame () for holding a second lens group (L) that is disposed on an image plane side with respect to the first lens group (L), an actuator () for moving the second holding framein an optical axis direction, and a tubular cam frame () including a plurality of cam grooves that are formed at substantially equal intervals around a circumferential direction for moving the first holding frame () in the optical axis direction. The actuator () is attached to a portion in the cam frame () where the cam grooves are not formed. The first lens group (L) is moved using the cam grooves, and the second lens group (L) is moved using the actuator (), so that a faster zooming speed and a lower zooming noise can be achieved.