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. 06, 2015
Filed:
Oct. 04, 2013
Applicant:
Funai Electric Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Funai Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/095 (2006.01); G11B 7/00 (2006.01); G11B 7/1376 (2012.01); G02B 7/08 (2006.01); G11B 7/1392 (2012.01);
U.S. Cl.
CPC ...
G11B 7/1376 (2013.01); G02B 7/08 (2013.01); G11B 7/13925 (2013.01);
Abstract
A lens driving device includes a lens holder that holds a lens, a driving portion that drives the lens holder through a magnetic force produced using a coil and a magnet, and a guide shaft that supports the lens holder movably. When moving the lens holder to a target position, an AC voltage is applied to the coil over a specific interval from a beginning of movement of the lens holder. Further, an amplitude of the AC voltage is reduced stepwise with the passage of time.