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:
Jul. 05, 2022
Filed:
Nov. 05, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Kei Suzuki, Chigasaki, JP;
Daisuke Fujiwara, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A lens barrel moves a plurality of lens groups efficiently in an optical axis direction while inhibiting size of the lens barrel from increasing. The lens barrel comprises a plurality of holding members respectively holding optical components, respectively provided with cam followers, and supported movably in optical axis direction, a cam cylinder having cam grooves engaged with the cam followers, and held rotatably around an axis parallel to an optical axis, and a driving unit configured to drive one holding member out of the plurality in the optical axis direction. By driving the one holding member being in the optical axis direction, the cam cylinder rotates, and another holding member out of the plurality is driven in the optical axis direction. The driving unit includes a vibration-type linear actuator configured to generate thrust force to drive the one holding member by an elliptical vibration generated in a vibrator.