Invention Grant
US08744254B2 Lens control device and image sensing device using same 有权
镜头控制装置和使用其的图像感测装置

Lens control device and image sensing device using same
Abstract:
There is provided a lens control device that feeds a motor current to a lens drive motor which drives lens according to the motor current, the lens control device including: a servo computation portion that calculates a motor current setting value such that a deviation of the position of the lens to which a correction offset has been adjusted from a target position is reduced; a motor driver that generates the motor current according to the motor current setting value; and a calibration computation portion that adjusts the correction offset such that an average value of the motor current approaches zero.
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