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:
Aug. 08, 2006
Filed:
Oct. 27, 2005
Takuji Hamasaki, Saitama-ken, JP;
Tomoaki Kobayashi, Saitama-ken, JP;
Takuji Hamasaki, Saitama-ken, JP;
Tomoaki Kobayashi, Saitama-ken, JP;
PENTAX Corporation, Tokyo, JP;
Abstract
A lens body tube configured to support at least one lens inside an inner tube such that the at least one lens can be translated along the optical axis direction of the lens body tube includes a cam ring configured to be rotatably supported around the outer circumferential surface of the inner tube, the at least one lens being configured to be translated along the optical axis direction accompanied by the rotation of the cam ring, a plurality of cams provided on the inner circumferential surface of the cam ring, a plurality of cam followers provided on a lens frame supporting each of the at least one lens, each of the plurality of cam followers being engaged with a corresponding one of the plurality of cams through an opening provided on the inner tube, and a plurality of first protrusions, each of which is formed integrally with a corresponding one of the plurality of cams, and has contact with the outer circumferential surface of the inner tube.