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:
Nov. 04, 2025
Filed:
Feb. 07, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Yuusuke Hirai, Saitama, JP;
Akira Yokoyama, Tochigi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A lens barrel including: a linear guide member with a linear guide extending along an optical axis formed therein; a cam member with a cam formed therein; and a moving member, holding an optical element, including an engaging member engaging with the linear guide and the cam, and moving along the optical axis by a relative rotation between the linear guide member and the cam member, wherein the engaging member includes a first engaging member engaging with the cam, and a second engaging member engaging with the linear guide and having a plane in contact with the linear guide, wherein an amount of backlash between the first engaging member and the cam is smaller than an amount of backlash between the second engaging member and the linear guide, and wherein the lens barrel includes a viscous member arranged between the linear guide and the second engaging member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile