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:
Jan. 06, 2015
Filed:
May. 06, 2011
Takahiro Ooya, Yokohama, JP;
Takahiro Ooya, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A lens barrel includes lens groups, lens retaining frames retaining the lens groups, respectively, between a collapsed state and a photographic state are moved toward an object side, a movable cylinder retaining the plurality of lens retaining frames therewithin, and a driving mechanism to move the lens retaining frames. The driving mechanism includes a main guide shaft parallel to the photographic axis and supports a retractable lens retaining frame retaining a retractable lens group movably along and rotatably about the main guide shaft, a lead screw disposed in parallel with the main guide shaft and to be driven to rotate, a screw member to be screwed on the lead screw by coming into contact with the lead screw in directions perpendicular to the lead screw to be moved along the lead screw by a rotation of the lead screw, and a cam structure connecting the retractable lens retaining frame with the screw member to convert a movement of the screw member along the lead screw into a rotary motion of the retractable lens retaining frame about the main guide shaft and a linear motion of the retractable lens retaining frame along the main guide shaft.