Abstract: A headlamp provided with correcting means for correcting a light distribution characteristic which is caused by an inclination of a vehicle body with respect to a road surface. An outer lens section fixed to the vehicle body is provided forwardly of a lamp body section of the projector type which is pivoted around an optical axis so as to maintain the light distribution characteristic horizontal in response to the inclination of the vehicle body, and the outer lens section has a lens cut formed thereon for diffusing a variation component of passing light to a turning direction when the car body is inclined for turning.

Abstract: A motor-bicycle head lamp includes a reflector formed in a spheroidal shape; a convex lens disposed in front of the reflector; and a shade disposed near a focal point of the convex lens substantially midway between the reflector and the convex lens. The shade is rotatable around the optical axis of the motor-bicycle head lamp in accordance with a slant angle of the body of the motor-bicycle. A slant angle sensor device is provided to rotatably drive the shade.