Vehicle headlight

A vehicle headlight comprising:

• a first lamp unit including a plurality of first light emitting units capable of individually changing an amount of light emitted, the first lamp unit emitting light from the plurality of first light emitting units such that first irradiation spots irradiated with the light from the respective first light emitting units are arranged at least in a horizontal direction;
• a second lamp unit including a plurality of second light emitting units capable of individually changing an amount of light emitted, the second lamp unit emitting light from the plurality of second light emitting units such that second irradiation spots irradiated with the light from the respective second light emitting units are arranged in a matrix;
• a region determination unit that determines, based on a signal indicating a state of another vehicle from a detection device that detects the other vehicle located in front of the vehicle, a predetermined region overlapping with a visual recognition portion for allowing a driver of the other vehicle to visually recognize the outside of the vehicle;
• and
• a control unit, wherein
• the second irradiation spots are smaller than the first irradiation spots, and at least one of the first irradiation spots overlaps with at least one of the second irradiation spots,
• when the predetermined region is not determined by the region determination unit, the control unit controls the first lamp unit such that at least light is emitted from the first lamp unit, and
• when the predetermined region is determined by the region determination unit, the control unit controls the first lamp unit such that an amount of light emitted from the first light emitting unit corresponding to the first irradiation spot overlapping with the predetermined region is reduced, and controls the second lamp unit such that an amount of light emitted from the second light emitting unit corresponding to the second irradiation spot overlapping with the predetermined region is reduced or becomes zero, and light is emitted from the second light emitting unit corresponding to the second irradiation spot overlapping with the first irradiation spot overlapping with the predetermined region and not overlapping with the predetermined region.