Position controller for optical element
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United States of America Patent
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Apr 16, 2013
Grant Date -
Jul 5, 2012
app pub date -
Jan 18, 2012
filing date -
Dec 11, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A position controller for an optical element of an optical system includes a first movable member supported by a support member to be movable relative thereto in a first direction orthogonal to an optical axis, a second movable member holding the optical element and supported by the first movable member to be movable relative thereto in a second direction nonparallel to the first direction, an electromagnetic actuator that produces a driving force for moving at least the second movable member in the second direction, and an insertion/removal drive mechanism for moving the second movable member between an anti-shake driving position, where a position control for the second movable member can be performed using the electromagnetic actuator, and a removed position where the second movable member is positioned outside a range of the position control that uses the electromagnetic actuator.
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