Vehicular headlamp

A vehicular headlamp (400) for emitting light toward a predetermined emitting direction, includes: a plurality of semiconductor light emitting devices (102a,102b,102c,102d,102e) that are substantially aligned by aligning with their one sides with a predetermined straight line; and an optical component (104), having an optical center (F) on the predetermined straight line, for irradiating light emitted by the semiconductor light emitting devices (102a,102b,102c,102d,102e) toward the predetermined emitting direction.