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. 13, 2020
Filed:
Jan. 22, 2019
Olympus Corporation, Hachioji-shi, Tokyo, JP;
Junya Harada, Hachioji, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
A lens driving device includes a lens frame that holds a lens, a rack provided pivotally with respect to the lens frame around a pivot shaft along an optical axis of the lens, a lead screw provided along the optical axis, a spring that makes the rack pivot around the pivot shaft, pushes the rack against the lead screw, and engages a tooth of the rack with a tooth of the lead screw, a driving unit that rotates the lead screw, and a nut that includes an end surface facing the rack along the optical axis with a gap C being included therebetween, that engages with the lead screw with backlash being included therebetween, and that is provided un-rotatably with respect to the lens frame. In a case where a half pitch of the tooth of the lead screw is A and the backlash along the optical axis between the lead screw and the nut is B, A>B+C is satisfied.