Patent ID: 8215809

Claim:
A light control apparatus for controlling directions of optical axes of headlights mounted in a vehicle, comprising: a position detecting section that detects positions of the headlights with respect to a road surface; an optical axis direction calculating section that calculates the directions of the optical axes of the headlights, individually, so that the optical axes are directed to illumination targets positioned at predetermined distances from the positions of the headlights detected by the position detecting section; a leveling control section that controls the directions of the optical axes of the headlights in the vertical direction, individually; a leveling output section that outputs a control command based on a calculation result of the optical axis direction calculating section to the leveling control section; a swivel control section that controls the directions of the optical axes of the headlights in the horizontal direction, individually; a steering angle detecting section that detects a steering angle of the vehicle; and a swivel output section that outputs control commands based on a detection result of the steering angle detecting section, wherein the optical axis direction calculating section comprises a swivel correction section that detects changes in the angles of the optical axes in the vertical direction generated due to operation of the swivel control section and corrects control amounts of the leveling control section so that the changes in the angles are canceled.