Ultrasonic motor and lens driving apparatus
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United States of America Patent
Stats
-
Nov 7, 2017
Grant Date -
Oct 9, 2014
app pub date -
Jun 23, 2014
filing date -
Jan 30, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ultrasonic motor includes a vibrator configured to generate a vibration, a relatively movable member configured to be movable by the vibrator, wherein the relatively movable member is movable relatively according to the vibration of the vibrator, a holding unit configured to hold the vibrator, wherein the holding unit includes a first holding member configured to hold the vibrator and a second holding member; and a damping member provided between the vibrator and the second holding member and configured to reduce a vibration transmitted to the second holding member, a pressure unit configured to press the vibrator against the relatively movable member, wherein the second holding member is configured to press the vibrator against the relatively movable member, and wherein the first holding member is made of a material having a higher damping capability against the vibrator than a material of the second holding member.
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