| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a galvanic driver capable of quickly rotating a galvanic mirror to a prescribed retracting position, when abnormality occurs. SOLUTION: Since the galvanic driver detects abnormality of a driving signal with limit circuits 21, 25 and forcedly rotates the galvanic mirror 10 to the origin, the mirror 10 is forcedly returned to the origin against inertial force by the driving force of a driving part 12, even if the mirror 10 is being acted to be driven in the direction of an abnormal angle so that the interference of the mirror 10 can be prevented.</p> |
