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Title:
VIBRATION ACTUATOR, LENS BARREL, AND CAMERA
Document Type and Number:
Japanese Patent JP2014018016
Kind Code:
A
Abstract:

To provide a vibration actuator, a lens barrel, and a camera, having excellent start-up characteristics.

A vibration actuator 10 of the present invention includes: a vibration part 13 that is held so as not to be able to rotate relatively to a base part 8 and is vibrated by an electromechanical element 11; a relatively moving part 14 that rotates relatively to the vibration part 13 by the vibration; and a holding member 17 that holds the relatively moving part 14, rotates integrally with the relatively moving part 14, and is held so as to be able to rotate relatively to the base part 8 by sandwiching a rolling motion member 20. The holding member 17 is made of aluminum. On a contact part of the holding member 17 with the rolling motion member 20, surface coats 17d and 17e, of the hardness of 700, are formed.


Inventors:
SATO TAKAHIRO
Application Number:
JP2012000155276
Publication Date:
January 30, 2014
Filing Date:
July 11, 2012
Export Citation:
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Assignee:
NIKON CORP
International Classes:
H02N2/00; G02B7/04
Domestic Patent References:
JP2006280139A2006-10-12
JPH07163165A1995-06-23
JPH05328761A1993-12-10
JP2004072993A2004-03-04
JP2010285653A2010-12-24
JPH07218801A1995-08-18
JPH08322272A1996-12-03
JP2006158053A2006-06-15
JP2006158054A2006-06-15
Foreign References:
US4692651A1987-09-08
Attorney, Agent or Firm:
Hisao Kamata