Optical axis adjusting device of vehicle headlamp

摘要

In an optical axis adjusting device of a vehicle headlamp, which judges an inclined state on the basis of detection of an ultrasonic sensor of a vehicle, and performs an optical axis adjustment of a head lamp, in order to accurately judge the inclined state and to suitably adjust the optical axis of the head lamp, with respect to the detection by the ultrasonic sensor, a factor hindering its accurate detection is detected, and when it is judged that the ultrasonic sensor can not perform accurate detection, the optical axis adjustment of the head lamp is suspended.