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:
Sep. 07, 2021
Filed:
Apr. 09, 2019
Tdk Corporation, Tokyo, JP;
Shusuke Ichihashi, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A lens drive device includes a lens holder capable of holding at least one lens and a frame arranged around the holder and holding the holder relatively movable along a light axis of the lens. At least three stopper convex portions protruding toward the frame are formed on an outer circumference of the holder. Stopper concave portions housing each of the stopper convex portions are formed on the frame correspondingly to the stopper convex portions. A convex intersection corner between the first convex end surface and the convex side surface has a chamfering portion or an R curved surface portion to avoid touching a concave intersection corner between the concave bottom surface and the concave side surface.