Patent ID: 6693380
Filing Date: 2004-02-17
Classification: B60Q

Abstract:
An auto leveling apparatus of vehicle headlamp comprising:a head lamp of which a light axis tilts up and down in relation to a car body by drive of an actuator; a control unit for controlling the drive of said actuator; a speed sensor for detecting car speed; a pitch angle sensor for detecting car pitch angle; and a memory for storing the car pitch angle data detected by the pitch angle sensor, wherein said control unit controls the drive of said actuator, on the basis of the pitch angle data detected by said pitch angle sensor, so that the light axis of the headlamp has a fixed inclination in relation to a road surface, and said control unit controls the drive of the actuator only in case that a vehicle posture (pitch angle data) that has changed once during stoppage becomes stable and the difference between its stable vehicle posture and a reference posture (reference pitch angle data) exceeds a predetermined value.