Vehicle lamp with lamp controller that controls the emission direction when turning
A vehicle lamp includes an optical unit including a light source that emits at least a low beam light distribution pattern and a lamp control unit that controls the optical unit. When the vehicle is turning and an oncoming vehicle is present in front of a vehicle mounted with the vehicle lamp, the lamp control unit controls the optical unit to lower an emission direction of the low beam light distribution pattern.
1 . A vehicle lamp comprising:
an optical unit including a light source configured to emit at least a low beam light distribution pattern; and
a lamp controller configured to control the optical unit,
wherein the lamp controller is configured to determine whether an oncoming vehicle is present in front of the vehicle,
wherein the lamp controller is configured to generate position information of the oncoming vehicle when the oncoming vehicle is determined to be present, and
wherein when a vehicle mounted with the vehicle lamp is turning and the oncoming vehicle is determined to be present, the lamp controller controls the optical unit to lower an emission direction of the low beam light distribution pattern based on the position information of the oncoming vehicle.
2 . The vehicle lamp according to claim 1 , further comprising:
a drive unit including a motor configured to displace the optical unit in a vertical direction,
wherein the lamp controller lowers the emission direction of the low beam light distribution pattern by controlling the drive unit.
3 . The vehicle lamp according to claim 1 , wherein the lamp controller controls the optical unit such that a displacement amount of the emission direction during high-speed traveling of the vehicle is smaller than the displacement amount of the emission direction during low-speed traveling of the vehicle.
4 . The vehicle lamp according to claim 1 , wherein the lamp controller controls the optical unit such that the displacement amount of the emission direction when a position of the oncoming vehicle is close to a horizonal direction center in front of the vehicle is smaller than the displacement amount of the emission direction when the position of the oncoming vehicle is farther from the center.
5 . The vehicle lamp according to claim 1 ,
wherein the lamp controller controls the optical unit such that a displacement amount of the emission direction when the vehicle is turning to a vehicle own lane side is larger than the displacement amount of the emission direction when the vehicle is turning to an opposing lane side.
6 . The vehicle lamp according to claim 5 , wherein the lamp controller controls the optical unit such that the displacement amount of the emission direction when a steering device is operated to the vehicle own lane side is larger than the displacement amount of the emission direction when the steering device is operated to the opposing lane side.
7 . The vehicle lamp according to claim 1 , wherein the lamp controller is configured to perform a parallax correction on the position information of the oncoming vehicle to generate corrected position information corresponding to an irradiation direction of the optical unit, and to control the optical unit based on the corrected position information.
8 . The vehicle lamp according to claim 1 , wherein the lamp controller is configured to, upon determining that the vehicle has completed turning, control the optical unit to return the emission direction of the low beam light distribution pattern to a reference direction.