Patent ID: 7455439

Claim:
A headlight for a motor vehicle, comprising a light source, a reflector of the elliptical type, a first focus or which is situated in the vicinity of the light source, a convergent lens having a focal plane which passes close to a second focus of the reflector, and a masking or occulting screen which is interposed axially between the reflector and the lens on the longitudinal axis of the headlight, and which delimits a cut-off profile in the light beam emitted by the light source, whereby to produce, for illumination in wet weather, a regulation beam comprising a zone of reduced illumination which is situated below the cut-off profile, wherein the masking screen includes at least one generally transverse portion which is formed of transparent material that lies above the cut-off profile, and wherein the said transparent portion of the masking screen includes a zone of reduced transparency which forms the zone of reduced illumination in the regulation lighting beam.