Patent ID: 6068391
Filing Date: 2000-05-30
Classification: F21S

Abstract:
A motor vehicle headlight comprising:a light source having a first filament for producing a chopped beam and a second filament for forming an unchopped beam, the light source being such that the second filament can emit light freely around the second filament;a masking screen associated with the first filament, defining a cut-off for the chopped beam limiting emission of light by the first filament to a given angular field;a cover lens in front of the light source and reflector, the cover lens being substantially without any light deflecting capability; anda reflector defining an optical axis of the reflector, wherein a horizontal plane and a vertical plane contain the optical axis, the mirror further defining two transition half planes extending close to the optical axis and inclined to the horizontal plane and lying slightly within the region cut-off from the first filament by the masking screen, with the transition half planes being below the horizontal plane by the same amount as each other, the reflector comprising:an upper zone of the reflector, bounded by the transition half planes, the upper zone comprising two lateral sub-zones, each lateral sub-zone having a base surface and a reflective surface applied on the base surface, the base surfaces of the lateral sub-zones being symmetrical with respect to the vertical plane, each reflective surface comprising striations projected on the corresponding base surface, the reflective surfaces to the two lateral sub-zones defining two respective components of the chopped beam; anda second zone in the remainder of the reflector, having a reflective surface for cooperation with the second filament only and being adapted to generate a beam portion which is wide and which extends at least partly above the cut-off.