Piezoelectric actuator, lens-barrel, and camera
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United States of America Patent
Stats
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Jul 8, 2014
Grant Date -
Apr 12, 2012
app pub date -
Jun 15, 2010
filing date -
Jun 15, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A piezoelectric actuator includes: a first piezoelectric device between a base member and a moving member, and that is capable of being expanded and contracted in a direction in which the first piezoelectric device intersects with a first face that opposes the moving member of the base member; a second piezoelectric device between the first piezoelectric device and the moving member, and that is capable of being expanded and contracted in a direction different from the intersecting direction; a transfer member between the first piezoelectric device and the moving member that includes a through hole piercing through in the intersecting direction, receiving amounts of expansion and contraction of the first piezoelectric device and the second piezoelectric device to transfer a driving force to the moving member; and a supporting member that pierces through the through hole, and that can support the moving member.
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