Motor vehicle headlamp for emitting a light beam delimited by a cut-off line in two half planes offset in height from each other

摘要

A headlamp for a motor vehicle has a lamp with an axial filament which emits light all around it, together with a reflector and a cover glass. The reflector produces a beam which is delimited by a cut- off line defined by two half planes which are offset from each other in the vertical direction, and which lie on either side of a vertical reference plane. A first lateral zone of the reflector has a reflective surface which forms a concentrated beam delimited by a straight, horizontal first cut-off line, situated entirely on one side of the vertical reference plane. A second zone of the reflector, extending over the base surface of the latter and on the opposite side, has a reflective surface which produces a wide beam delimited by a straight and horizontal second cut- off line. The reflector also includes means for offsetting the light beam vertically, such as to put the first cut-off line at the level of the higher cut-off half plane, and the two zones of the reflector are joined continuously at their intersection along a continuous line extending between the upper and lower edges of the reflector.