Title:
ACTUATOR DEVICE, LENS BARREL, AND CAMERA
Document Type and Number:
WIPO Patent Application WO/2013/125635
Kind Code:
A1
Abstract:
Provided are a camera, lens barrel and actuator device which are quiet, have increased AF accuracy, and enable AF lens positioning in a short period of time. The actuator device (160) according to the present invention comprises a first actuator (10) which generates driving power by means of progressive oscillatory waves generated by a first electromechanical conversion element (13) and moves a moving body (L1), a second actuator (50) which generates driving power by means of displacement generated by a second electromechanical conversion element (51) and moves the moving body (L1), and a control unit (111) which controls the first actuator (10) and the second actuator (50). The actuator device (160) is characterised in that the control unit (111) moves the moving body (L1) by means of the first actuator (10) during the rough motion operation of the moving body (L1), and moves the moving body (L1) by means of the second actuator (50) during the fine motion operation of the moving body (L1).
Inventors:
ASHIZAWA TAKATOSHI (JP)
Application Number:
PCT/JP2013/054331
Publication Date:
August 29, 2013
Filing Date:
February 21, 2013
Export Citation:
Assignee:
NIKON CORP (JP)
International Classes:
H02N2/00; G02B7/04
Foreign References:
| JPH06113572A | 1994-04-22 | |||
| JPH1146488A | 1999-02-16 | |||
| JP2000078861A | 2000-03-14 | |||
| JP2009153286A | 2009-07-09 |
Attorney, Agent or Firm:
KAMATA, Hisao (JP)
Hisao Kamata (JP)
Hisao Kamata (JP)
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Claims: