Tremble preventing device

摘要

Correction lenses are driven by a lengthwise-direction actuator in order to correct a tremble of a focused image in the lengthwise direction. A rotational motion of the lengthwise-direction actuator is transmitted to the correction lenses through a lengthwise-direction direct drive mechanism. A previous rotational direction of a motor of the lengthwise-direction actuator is memorized. It is judged that a rotational direction of the motor for correcting the tremble is the same as or the reverse of the previous rotational direction. If the rotational directions are the reverse, a driving pulse amount of the motor is adjusted such that a pulse count for canceling a play of engaging portions of the lengthwise-direction direct drive mechanism is included. With respect to correcting the tremble in the lateral direction, the same operation as described above is performed.