Motor vehicle headlamp having a reflector capable of producing, by itself, a light beam with a V-shaped cut-off

• Main Authors: EVRARD; LAURENT, SALADIN; DENIS
• Format: Patent
• Language: English
• Published: 14.09.1999
• Edition: 6
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

A motor vehicle headlamp has a light source, such as the filament of an incandescent lamp, of a kind which emits light freely around it, together with a reflector and a cover lens. The reflector is adapted so that, by reflection from the light source, it can produce, by itself, a light beam which is delimited by a cut-off defined by a horizontal half cut-off line and a raised cut-off line which is raised by a predetermined angle of cut-off elevation with respect to the horizontal. The reflector consists of two zones, which are separated by two transition half planes that pass close to the source, namely a first zone consisting of a surface for producing images of the light source offset on the side towards the horizontal half cut-off line and extending below, and close to, the latter, and a second zone consisting of a surface which produces images of the light source offset on the side towards the raised half cut-off line and extending below and close to the latter.