Camera module actuator
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United States of America Patent
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Nov 2, 2021
Grant Date -
Apr 5, 2018
app pub date -
Sep 7, 2017
filing date -
Oct 4, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An actuator includes a magnet, a driving coil facing the magnet, a driver, and a position calculation processor. The driver is configured to move the magnet in at least one of an optical axis direction and a direction perpendicular to the optical axis by applying a driving signal to the driving coil. The position calculation processor includes sensing coils, and is configured to calculate a position of the magnet according to inductance levels of an inductor of the sensing coils. The inductance levels vary according to movements of the magnet.
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