An array-type light-emitting device 212 includes multiple pixel circuits PIX electrically coupled in parallel and spatially arranged in a matrix. A power supply circuit 220 supplies electric power to the array-type light-emitting device 212. A DC/DC converter 224 has an output coupled to a power supply terminal of the array-type light-emitting device 212 via a power supply line. A power supply control circuit 225 sets a target value V CNT(REF) that corresponds to a light distribution pattern, and controls the DC/DC converter 224 such that the control target voltage V CNT approaches the target value V CNT(REF) .