Optical element driving device
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United States of America Patent
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Aug 11, 2020
Grant Date -
Feb 8, 2018
app pub date -
Aug 3, 2017
filing date -
Aug 4, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An optical element driving device is provided, including a fixed part, a movable part, a driving mechanism, and a position sensing assembly. The fixed part includes a base. The movable part includes a holder for carrying an optical element. The driving mechanism is configured to drive the holder to move along a first direction with respect to the base. The position sensing assembly includes a magnetic element and a magnetic field sensing element in corresponding positions. The magnetic element is configured to sense the amount of displacement of the holder along the first direction with respect to the base. The magnetic pole direction of the magnetic element is different from the first direction.
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