Patent ID: 6626564
Filing Date: 2003-09-30
Classification: B60Q

Abstract:
An apparatus for automatically adjusting an optical axis of a vehicle headlight comprising:a steering angle detecting means for detecting a steering angle of a vehicle steering wheel; a forward information detecting means for detecting a forward road shape based on displacement of position information at at least two different distances to a line marking indicating lane width on a road surface in front of the vehicle; a swivel control means for swiveling and adjusting an optical axis of the vehicle headlight right and left parallel to the road surface based on the steering angle detected by the steering angle detecting means; and an advance control means for first swivel adjusting the optical axis of the headlight when the forward information detecting means detects that the shape of the road in front curves before the steering angle detecting means detects a steering angle, the advance control means taking priority over the swivel control means in adjusting the optical axis of the headlight until an adjustment angle determined based on the steering angle exceeds an adjustment angle calculated based on the forward information.