Illuminating or signaling light in the form of a strip comprising a stepped planar mirror

Abstract

The invention concerns an illuminating or signaling light for a motor vehicle that is designed to produce a regulatory lighting or signaling beam directed roughly towards the front along a longitudinal optical axis, comprising a light source, first second reflectors that are arranged laterally on each side of the light source, and that reflect the light rays emitted by the source roughly longitudinally towards the front, on the rear face of a distribution screen that is arranged longitudinally facing the reflectors so as to at least laterally spread the light rays with a view to forming the regulatory beam, of the type in which the distribution screen has roughly the shape of a strip stretched in the direction of its length, at least one reflector being formed by a stepped plane, the stepped plane comprising a series of substantially parallel reflection facets, a first optical element being interposed on the path of the light rays emitted by the light source, between the light source and the stepped plane, the first optical element being designed to straighten up the light rays emitted by the source in a substantially parallel light beam directed towards the stepped plane, which by reflection returns the light rays in a longitudinal direction oriented towards the front. According to the invention, the first optical element is a Fresnel element, the first reflector is a stepped plane and the second reflector is a roughly parabolic mirror, the light source being arranged substantially at the focus of the parabola.

Dependencies are inferred from the claim text.