Title:
A drive, an automatic focusing device using it, picture apparatus, and a lens device
Document Type and Number:
Japanese Patent JP6124509
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a drive device with reduced size capable of controlling, in minute vibration drive in an optical axis direction of an optical member such as a lens and an imaging element, driving the optical member with large amplitude at a high speed and in an accurate and efficient manner, and prevent generation of large vibration and noise.SOLUTION: A drive device includes: a plurality of actuators 111 that each have one end having a movable lens 103 fixed thereto and the other end supported by a fixing member, and are bent and deformed at least in an optical axis direction according to application of voltage; and an actuator control circuit 112 that drives the plurality of actuators 111 to vibrate a bending vibration piece formed of the movable lense 103 and the plurality of actuators 111 at a frequency around bending vibration resonance, so as to vibrate and deform the movable lens 103 in the optical axis direction.
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Inventors:
Sumio Kawai
Application Number:
JP2012105779A
Publication Date:
May 10, 2017
Filing Date:
May 07, 2012
Export Citation:
Assignee:
Olympus Endo Technology America Inc.
International Classes:
G02B7/08; G02B7/04; G02B7/36; G03B5/08; G03B13/36; H04N5/232
Domestic Patent References:
| JP61214869A | ||||
| JP2010004718A | ||||
| JP2009044861A | ||||
| JP2010074502A | ||||
| JP9189841A | ||||
| JP2010009009A | ||||
| JP2009198629A |
Attorney, Agent or Firm:
Kurata Masatoshi
Takakura Shigeo
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takakura Shigeo
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori