Displacement sensor and camera module having the same

    公开(公告)号:US10587787B2

    公开(公告)日:2020-03-10

    申请号:US16168042

    申请日:2018-10-23

    Abstract: A displacement sensor includes a first frame; a second frame; a first coil including a first voltage formed at the first frame applied to the first coil; a second coil formed at the first frame including a current of a second voltage flowing in the second coil corresponding to a voltage of the first frame if the first voltage is applied to the first coil; a conductor coupled to the second frame; and a detector for calculating a relative position between the first frame and the second frame by monitoring the second voltage. Further, a size of the second voltage is reduced if the second coil is moved closer to the conductor.

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