Patent ID: 9453629
Filing Date: 2016-09-27
CPC Classification: B60Q,F21S

Claim Text:
1. A system configured to control a light distribution of a lighting device mounted in a vehicle, the system comprising: a light source; a projection lens through which at least a part of light emitted from the light source passes; a rotary shade disposed at a rear side of the projection lens to block a part of the light emitted from the light source and having a rotary axis; a first driving mechanism configured to change a direction of an optical axis of the projection lens; and a second driving mechanism configured to rotate the rotary shade on the rotary axis, wherein the rotary shade includes: a first edge projected to a front area of the projection lens, as a periphery of a first light distribution pattern, when the second driving mechanism rotates the rotary shade to a first angle position; a second edge projected to the front area of the projection lens, as a first periphery of a second light distribution pattern, when the second driving mechanism rotates the rotary shade to a second angle position, the second light distribution pattern having an illumination area larger than an illumination area of the first light distribution pattern; and a twist end surface extending around the rotary axis to intersect the first edge at a first position with respect to a direction of the rotary axis, and to intersect the second edge at a second position with respect to a direction of the rotary axis, the twist end surface includes an edge projected to the front area of the projection lens, as a second periphery of the second light distribution pattern, and the system further comprises: a first information acquisition unit configured to acquire first information on a rudder angle of the vehicle; a second information acquisition unit configured to acquire second information on a front area of the vehicle; a first control unit configured to control the first driving mechanism to determine the direction of the optical axis based on the first information; and a second control unit configured to control the second driving mechanism to determine a position of the second periphery based on the second information.