Patent ID: 7357546

Claim:
A vehicular headlamp comprising a light-emitting system comprising at least one semiconductor light-emitting element and an optical system comprising at least one of a reflector and a lens, a focal point of said optical system being on or near a light-emitting surface of said light-emitting system, said light-emitting surface having a horizontally elongated shape in a direction orthogonal to an optical axis of said light-emitting system when viewed in the direction of the optical axis of said light-emitting system, and said optical system forming a light distribution pattern by enlarging a light pattern of said light-emitting surface in a horizontal direction, wherein the light-emitting surface of the light-emitting system has a rotationally asymmetric shape and a straight-line edge, whereby the optical system forms the light distribution pattern with a cut line by projecting the straight-line edge of the light-emitting surface.