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:
Jul. 03, 2012
Filed:
Jan. 25, 2010
Tatsuki Wade, Nagano, JP;
Akihito Wada, Nagano, JP;
Tatsuki Wade, Nagano, JP;
Akihito Wada, Nagano, JP;
Nidec Sankyo Corporation, , JP;
Abstract
A lens drive device may include a movable body holding a lens and a drive mechanism for driving the movable body in the optical axis direction. The drive mechanism may include a drive magnet part formed in a substantially triangular prism shape which is disposed at least one of four corners of the lens drive device, a drive coil wound around in a substantially triangular tube shape so that its inner peripheral face is oppositely disposed to an outer peripheral face of the drive magnet part through a gap space, and a magnetic member which is disposed on an object side with respect to the drive coil. The magnetic member is attracted toward an intermediate position of the drive magnet part in the optical axis direction.