Abstract: A rear indicating light for a motor vehicle comprises a light source, a bonnet in front of the light source, and an optical plate in front of the bonnet. The bonnet has means for distributing essentially uniformly the radiation it receives from the light source, over at least part of the surface of the flat optical plate, which is formed with striations to align the radiation along the optical axis. These striations are grouped in at least one discrete zone on the surface of the plate, the remainder of this surface consisting of at least one optically neutral zone, while the distributing means are adapted to distribute at least some of the radiation from the light source towards the discrete striated zones.

Abstract: A motor vehicle indicating light unit comprises a light source, an optical plate having optical arrangements to redirect the light from the region of the source so that it propagates with a mean direction generally parallel to a horizontal optical axis and a flux recovery and distributor bonnet disposed between the source and the optical plate. The bonnet assures a given distribution of the light onto the inside surface of the optical plate in at least a given direction. The optical plate is curved and has optical arrangements having different light transmission coefficients. The bonnet assures the given distribution of light which allows for the different transmission coefficients to obtain an evolution of the illumination at the exit from the plate in the given direction that satisfies a predetermined law.