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:
Oct. 30, 2012
Filed:
Oct. 22, 2009
Kazunori Takahashi, Tokyo, JP;
Kazunori Takahashi, Tokyo, JP;
Pentax Ricoh Imaging Company, Ltd., Tokyo, JP;
Abstract
A variable power lens, having first and second lens groups, includes first and second lens group support frames, a linear guide ring, first and second lens group drive rings which rotate to move the first and second lens group support rings in the optical axis direction relative to the linear guide ring, a drive ring coupler which couples the first and second lens group drive rings with each other to prevent relative rotation therebetween while allowing relative movement therebetween in the optical axis direction; and a drive-ring movement controller which integrally rotates the first and second lens group drive rings via the drive ring coupler without relatively moving in the optical axis direction when a power-variation operating member is operated, and moves one of the first and the second lens group drive rings in the optical axis direction without rotating when a focus operating member is operated.