Patent ID: 6332698
Filing Date: 2001-12-25
Classification: B60Q

Abstract:
A vehicle headlamp automatic leveling apparatus comprising:a headlamp of a vehicle, said headlamp emitting light along a light axis;an actuator which pivots said headlamp upward and downward in relation to the vehicle;a control unit for controlling operation of said actuator;vehicle speed detection means for detecting a vehicle pitch angle, whereinsaid control unit controls operation of said actuator based on a vehicle pitch angle such that the light axis of said headlamp maintains a constant, predetermined angle relative to a road surface on which the vehicle travels, and whereinsaid control unit controls operation of said actuator only when the vehicle is stationary and when the vehicle is in a stable traveling state,wherein said control unit controls operation of said actuator based on a vehicle pitch angle detected while the vehicle is stationary, and wherein when said pitch angle detection means detects a vehicle pitch angle while the vehicle is in the stable traveling state, said control unit controls operation of said actuator based on the vehicle pitch angle detected while the vehicle is in the stable traveling state.