Vibration actuator, and lens barrel and camera provided with same
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United States of America Patent
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Jul 26, 2016
Grant Date -
Feb 28, 2013
app pub date -
Feb 8, 2011
filing date -
Feb 8, 2010
priority date (Note) -
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Abstract
A vibration actuator that is easy to manufacture and has good driving performance, and a lens-barrel and a camera provided with the same. The vibration actuator is provided with an oscillator that generates oscillations; and a relative movement member that is pressure contacts the oscillator, and moves relative to the oscillator due to the oscillation. Either a contact face of the oscillator with respect to the relative movement member or a contact face of the relative movement member with respect to the oscillator is a thermosetting resin film that is formed of polyamide-imide resin and fluororesin, and the other contact face is an anodic oxide film.
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