Abstract: A light device, especially a signal lamp, for motor vehicles, comprising a carrier housing covered by a translucent cover, and an inner chamber in which at least one primary optical assembly is housed, and comprising a planar light guide to guide the light generated by a lighting unit. The light guide surface comprises a front output surface to emit light rays out of the light device and an input surface to bind light rays produced by the lighting unit. The light guide surface includes, on its side facing away from the front output surface, at least one reflective surface configured to direct light rays to, and through, the output surface out of the planar light guide to create, on the front output surface, an output light region with a light intensity which differs from light intensity shown by places adjacent to the region on the front output surface.

Abstract: A light device, especially a signal lamp, for motor vehicles, comprising a carrier housing covered by a translucent cover, and an inner chamber in which at least one primary optical assembly is housed, and comprising a planar light guide to guide the light generated by a lighting unit. The light guide surface comprises a front output surface to emit light rays out of the light device and an input surface to bind light rays produced by the lighting unit. The light guide surface includes, on its side facing away from the front output surface, at least one reflective surface configured to direct light rays to, and through, the output surface out of the planar light guide to create, on the front output surface, an output light region with a light intensity which differs from light intensity shown by places adjacent to the region on the front output surface.