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. 27, 2020
Filed:
Apr. 08, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Kaori Miyoshi, Fuchu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A driving apparatus which is capable of detecting a position with a long stroke and ensuring large driving thrust. The driving apparatus has a fixed member, a movable member, a coil, a position detector that detects a position of the movable member, and a first magnet unit and a second magnet unit that are placed with the coil interposed therebetween. The position detector and the coil are placed on one of the fixed member and the movable member, and the first magnet unit and the second magnet unit are placed on the other one. The second magnet unit has a concave portion in a central part of a surface facing the position detector. The position detector is placed closer to the second magnet unit than to the first magnet unit.