Patent ID: 8070336

Claim:
A lighting or signaling device for a motor vehicle which is capable of emitting a linear beam essentially in a direction of an optical axis, and which comprises: a light source; a light ray guiding plate that comprises an input edge for inputting light rays, an output edge for outputting said light rays, and a rear edge for reflecting said light rays coming from said light source in a direction of said output edge; wherein said light ray guiding plate further comprises a front face and a generally opposing rear face between said rear edge and said output edge, an area for receiving light from said light source shaped so that said light rays emitted by said light source are propagated radially at said area, wherein said light ray guiding plate is shaped so that said light rays propagate in meridian incident propagation planes between said light source and said rear edge which reflects said light rays in reflected propagation planes toward said output edge, and wherein said rear edge being shaped so that said reflected propagation planes have an orientation with respect to the optical axis such that said lighting or signaling device is capable of emitting a generally linear light beam along an essentially longitudinal optical axis; said input edge defining an aperture or opening in said light ray guiding plate between said front edge and said rear edge, said light source being situated in operative relationship with said aperture or opening and emitting said light rays through said input edge and toward each of said output edge and said rear edge, with at least some of said light rays being reflected by said rear edge toward said output edge and reflecting off each of said rear face and said front face until they exit said output edge.