Invention Grant
- Patent Title: Lens control device and image sensing device using same
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Application No.: US13325206Application Date: 2011-12-14
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Publication No.: US08526803B2Publication Date: 2013-09-03
- Inventor: Akihito Saito , Koji Saito
- Applicant: Akihito Saito , Koji Saito
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2010-292729 20101228
- Main IPC: G03B17/00
- IPC: G03B17/00

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 from a target position to which a correction offset has been added 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.
Public/Granted literature
- US20120163784A1 LENS CONTROL DEVICE AND IMAGE SENSING DEVICE USING SAME Public/Granted day:2012-06-28
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