Light-emitting apparatus and vehicle headlamp system

To provide a technique capable of alleviating the sense of visual discomfort when light distribution areas are switched. A vehicle lamp (20R, 20L) configured to include a light source (22), wherein the light source (22) comprises a plurality of light-emitting units (30) respectively comprising a control terminal (21) for controlling light emission and extinction, arranged along a first direction, and the plurality of light-emitting units (30) increases in a width of a first direction in proportion to a distance away from a predetermined reference position toward both sides along the first direction, with the width of a light-emitting unit (30a) corresponding to the predetermined reference position being the smallest.