PURPOSE: To irradiate optimum positions without putting the other vehicle in the glare of light by controlling the direction and range of irradiation so as not to irradiate the mirror of a preceding vehicle and the eye point of the driver of an opposed vehicle on the basis of the distance between head lamps and an image detecting means, the detected direction and the inter-vehicle distance.
CONSTITUTION: A control angle θ is obtained from a direction angle and inter-vehicle distance ΔV obtained by an processing device 48 from the positions Q1 of the head lamps 18, 20 of an own vehicle 10, the position Q2 of a camera 22 and the boundary position (cut line position) Q3 of the light and dark parts of light distribution for preventing glare to a preceding vehicle 11, and an optical axis is moved vertically according to the control angle θ. The moving quantity of actuators 46, 47 corresponding to this angle is computed. In this case, the moving quantity is made smaller than the maximum moving quantity to become the control angle θ. For instance, an irradiation range is to be below the predetermined positions of a rear view mirror and a fender mirror from the positions of tail lamps in the preceding vehicle, and below the eye point position of an occupant from the positions of the head lamps 18, 20 in the opposed vehicle.
SATONAKA HISASHI
NAKAMURA TAKASHI
