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:
Nov. 10, 2015
Filed:
Dec. 05, 2011
Applicants:
Takatoshi Ashizawa, Yokohama, JP;
Kunihiro Kuwano, Kawasaki, JP;
Masamitsu Kimura, Yokosuka, JP;
Inventors:
Assignee:
NIKON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N 2/00 (2006.01); G02B 27/10 (2006.01); H02N 2/02 (2006.01); H02N 2/06 (2006.01); G03B 3/10 (2006.01);
U.S. Cl.
CPC ...
H02N 2/004 (2013.01); G02B 27/1006 (2013.01); G03B 3/10 (2013.01); H02N 2/026 (2013.01); H02N 2/062 (2013.01); G03B 2205/0061 (2013.01);
Abstract
Provided is a lens barrel includes a vibration actuator that drives a focusing lens which brings a subject image into focus; an amplifying section that applies a pair of driving signals amplified to the vibration actuator; a phase shifting section that changes a phase difference between the pair of the driving signals; and a control section that, when a signal for giving an instruction to drive the vibration actuator is input, executes a first processing of causing the phase shifting section to perform an operation which periodically changes the phase difference of the pair of the driving signals.