Patent ID: 7352148

Claim:
An optical axis controller for at least one headlamp mounted on a vehicle with a steering wheel, the controller comprising: a steering angle detecting device operable to detect a steering angle; a driving device operable to adjust a light emission direction of the at least one headlamp; and a control unit operable to compute a steering angle hysteresis processing value based on the steering angle and the hysteresis value and to compute a desired light emission direction for the headlamps based on the steering angle hysteresis processing value and to control an actual light emission direction of the at least one headlamp to match the desired light emission direction using the driving device; wherein the control unit is further operable to compare a first result obtained by subtracting a prescribed steering angle hysteresis processing value from the steering angle to the hysteresis value and to assign a value obtained by subtracting the hysteresis value from the steering angle as the steering angle hysteresis processing value when the first result is equal to or larger than the hysteresis value.