VEHICLE LAMP SYSTEM, VEHICLE LAMP CONTROL DEVICE AND VEHICLE LAMP CONTROL METHOD

A vehicle lamp system includes an imaging unit that takes an image ahead of a host vehicle, a luminance analyzer that detects luminance of each of areas ahead of the host vehicle, a target analyzer that detects objects ahead of the host vehicle, a tracking unit that determines a specific object from the detected objects and detects displacement of the specific object based on a detection result of the luminance; a setting unit that sets, based on the detection result of the luminance and a detection result of the displacement, an illuminance value for each area, which includes a specific illuminance for a specific area determined according to a position where the specific target is present, and a controller that controls the light source the illuminance of the light to be radiated from a light source to each area based on the illuminance values set by the setting unit.