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. 29, 2006
Filed:
Jul. 19, 2005
Isao Okuda, Saitama, JP;
Isao Okuda, Saitama, JP;
PENTAX Corporation, Tokyo, JP;
Abstract
A lens drive mechanism includes a rotatable lead screw driven to rotate about an axis thereof, the axis extending parallel to an optical axis of a lens group; a non-rotatable guide shaft which extends parallel to the rotatable lead screw; a nut member made of synthetic resin which includes a screw engaging portion, with which the rotatable lead screw is screw-engaged, and a rotation-prevention portion, which is engaged with the non-rotatable guide shaft to prevent the nut member from rotating about the rotatable lead screw; and a lens support frame which supports the lens group and is movable together with the nut member in an optical axis direction. The rotation-prevention portion of the nut member includes a pair of holding portions which are formed integral with the nut member so as to resiliently contact the non-rotatable guide shaft.