US Patent 7134775 Vehicular headlamp and light-emitting module therefor

A vehicular headlamp includes a first semiconductor light-emitting element for emitting visible light, a reflector having an optical center in the vicinity of the first semiconductor light-emitting element and forming at least a part of a light distribution pattern of the vehicular headlamp, and a second semiconductor light-emitting element, for emitting infrared light, which is disposed at a position different from that of the first semiconductor light-emitting element, and which emits infrared light to be reflected by the reflector.