A main reflector has a main reflection-surface based on an ellipsoid of
revolution. A light source is arranged substantially at a first
focal-point of the main reflection-surface. A shade arranged
substantially at a second focal-point of the main reflection-surface cuts
off a part of reflected light from the main reflection-surface to form a
predetermined main light-distribution-pattern. A projection lens projects
the main light-distribution-pattern ahead of a vehicle. A sub reflector
reflects a light from the light source to irradiate the light on outer
sides of the main light-distribution-pattern as a predetermined sub-light
distribution pattern.