Patent ID: 8314546

Claim:
An illuminated panel that provides differentiated lighting comprising: a flat transparent substrate having a section, two main faces and a given thickness, at least one zone of direct light by means of a light source associated with one of the main faces, a visible radiation source, said radiation being guided by total reflections in the thickness of the substrate, at least one zone for extraction of the guided radiation, said extraction zone being associated with one of the main faces in order to form another illuminated zone distinct from the zone of direct light; wherein the light source is a single one, consists of an electroluminescent device, and forms the source of said guided radiation, and on the side of the main face associated with the extraction zone, the zone of direct light has a luminance less than the luminance of the other illuminated zone thus providing differentiated lighting; wherein the zone of direct light occupies a surface equal to at least 50% of the main face of the substrate; and wherein the zone of direct light, when the light source is turned off, the illuminated panel is transparent or substantially transparent.