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:
May. 25, 2021
Filed:
Sep. 12, 2017
Shanghai Billu Electronics Co., Ltd., Shanghai, CN;
Jianhua Wang, Shanghai, CN;
Gaofeng Gong, Shanghai, CN;
Shanghai Billu Electronics Co., Ltd., Shanghai, CN;
Abstract
A lens drive device, including a screening can (); periphery of the inside an upper cover () and driving magnets (); a lens support () is further provided inside the screening can (); a driving coil () is winded at a outer periphery of the lens support (); the driving magnets () include a first driving magnet and a second driving magnet; a structure of each of the first driving magnet and the second driving magnet includes corner segment () distributed along a corner of the screening can () and edge segment () distributed along an edge of the screening can (); and the first driving magnet and the second driving magnet are in a central symmetry around an axial center of the lens drive device. By improving a structure of the lens drive device, the lens drive device has beneficial effects of low power consumption and large driving force.