Method of making a mirror for a vehicle signalling or lighting device, and a headlight fitted with a novel mirror

摘要

In a method of manufacturing a flux-recovering mirror for a motor vehicle signaling or lighting device a base reflecting surface is provided. Mutually spaced apart base points are distributed in at least one zone of the surface. A randomly determined correcting offset is attributed to each base point so that each base point is associated with a corrected point situated on the normal to the base surface at said base point and located at a random distance from said base point. A corrected smooth surface passing through the corrected points is thus defined in the zone to form a mirror whose reflecting surface in said zone is constituted by said correcting smooth surface. The invention also relates to a headlight fitted with a mirror having properties of distributing images randomly. The invention is also applicable to making light beams more uniform.