Vehicle headlamp having a lamp unit with a matrix of light emitting units emitting a plurality of irradiation spots and a boundary determination unit and control unit controlling the boundary illuminance

A vehicle headlamp comprising:

• a lamp unit that has a plurality of light emitting units capable of individually changing a light amount to emit, and emits light from the plurality of light emitting units such that irradiation spots irradiated with the light from the respective light emitting units are arranged in a matrix;
• a boundary determination unit that determines a position of a boundary between a bright region to be brightened in a region where the lamp unit can emit light and a dark region to be made darker than the bright region;
• and
• a control unit that controls the lamp unit, wherein
• the control unit controls the lamp unit such that, in an irradiation spot row formed of the irradiation spots that overlap the boundary, an illuminance of light irradiated to the irradiation spots in the irradiation spot row becomes equal to or lower than an illuminance of light irradiated to the adjacent irradiation spots in the bright region side of the irradiation spots and equal to or greater than an illuminance of light irradiated to the adjacent irradiation spots in the dark region side of the irradiation spots, and a total amount of light irradiated from the lamp unit to the irradiation spot row becomes smaller according to a proportion of a portion in the irradiation spot row that overlaps the dark region.