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:
Jun. 11, 2013
Filed:
Nov. 07, 2011
Toshihiro Okuda, Utsunomiya, JP;
Toshihiro Okuda, Utsunomiya, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
A lens barrel includes a first cylinder, a second cylinder configured to rotate around an optical axis relative to the first cylinder and to move a lens holding frame holding a lens in an optical axis direction, a force unit arranged outside of the second cylinder, a force relay member arranged outside of the second cylinder and configured to contact the force unit, a first roller fixed to the force relay unit and configured to contact a first surface of the second cylinder, and to transmit a force to the first surface of the second cylinder, the force being applied by the force unit and relayed by the force relay unit; and a second roller fixed to the first cylinder, and configured to contact a second surface inside of the second cylinder, and to restrict a movement of the second cylinder in the optical axis direction by the force.