| 摘要 |
<p>A control section (CPU) (20) acquires a stop target position where a stop target lens should be stopped from a zoom tracing table (30-1) according to zoom operation. Next, a motor driver (14-1) is controlled to drive a DC motor of a lens unit (11). Comparison is made between a current state and a target (ideal) deceleration curve. When the stop target lens reaches a deceleration start position, deceleration is made along the target (ideal) deceleration curve by increasing or decreasing an ON ratio of PWM drive or/and a voltage applied according to deviance from the target (ideal) deceleration curve. When the stop target lens reaches a complete stop processing start position, the motor driver (14-1) is controlled to stop the stop target lens at the foregoing stop target position. Thereby, a zoom lens and a focus lens can be moved more precisely and speedy to the target position.</p> |
