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. 05, 2021
Filed:
Sep. 10, 2019
Tomohiko Osaka, Tokyo, JP;
Takashi Ishizawa, Tokyo, JP;
Tomohiko Osaka, Tokyo, JP;
Takashi Ishizawa, Tokyo, JP;
MITSUMI ELECTRIC CO., LTD., Tokyo, JP;
Abstract
Provided is a lens holder driving device having the fixing part including a base member, the driving mechanism including a yoke, the position detection part including a sensor magnet attached on a corresponding outer peripheral surface of the lens holder in a direction orthogonal to the optical axis. A magnetic detection device provided to the fixing part such that the magnetic detection device is opposite to the sensor magnet. The yoke includes an outer cylinder part having a cylindrical shape. The outer cylinder part includes a plurality of plate parts which are opposite to each other in the direction orthogonal to the optical axis. The plate parts having cutout parts at positions opposite to the sensor magnet. The lens holder driving device includes a foreign matter intrusion prevention member configured to prevent intrusion of foreign matters from the cutout part of the plate part.