CONTROL APPARATUS FOR VEHICLE HEADLIGHT, CONTROL METHOD FOR VEHICLE HEADLIGHT, AND VEHICLE HEADLIGHT SYSTEM

A control apparatus for a vehicle headlight where the control apparatus: sets a dimming range within high beam range in accordance with the position of a target object in front of the vehicle; sets, when high and low beams are turned on, luminous intensity of a partial range to a first luminous intensity, the partial range within an oncoming lane side and set between a virtual reference line parallel to the vehicle width direction and a predetermined position below the virtual reference line, sets, when high beam is turned off but low beam is turned on, luminous intensity of the partial range to a second luminous intensity lower than the first luminous intensity; and generates a control signal for headlight operation based on the setting result of the dimming range and the setting result of luminous intensity of the partial range, and outputs the control signal to the vehicle headlight.