Title:
A lens device which has an ultrasonic motor and it
Document Type and Number:
Japanese Patent JP5913857
Kind Code:
B2
Abstract:
Provided is an ultrasonic motor, comprising: a vibrator including a piezoelectric element and a contact surface to be brought into contact with a member to be driven, the vibrator driving the member to be driven by an ultrasonic vibration excited by the piezoelectric element; a holding part configured to hold the vibrator; a pressurization unit configured to apply a bias force for biasing the holding part toward the member to be driven so as to impress the contact surface against the member to be driven; and a fixing unit configured to support the pressurization unit, in which the holding part holds the vibrator on both sides of the contact surface in a driving direction of the member to be driven.
Inventors:
Makoto Oikawa
Application Number:
JP2011172018A
Publication Date:
April 27, 2016
Filing Date:
August 05, 2011
Export Citation:
Assignee:
Canon Inc
International Classes:
H02N2/00; G02B7/04
Domestic Patent References:
| JP2006158052A | ||||
| JP9047045A | ||||
| JP2000173201A | ||||
| JP2008187768A | ||||
| JP2010068586A | ||||
| JP11155290A | ||||
| JP9047044A |
Attorney, Agent or Firm:
Okabe
Shinichi Usui
Takao Ochi
Seiichiro Takahashi
Koji Yoshizawa
Masami Saito
Katsuhiko Kimura
Naofumi Tanaka
Shinichi Usui
Takao Ochi
Seiichiro Takahashi
Koji Yoshizawa
Masami Saito
Katsuhiko Kimura
Naofumi Tanaka