Abstract: An illumination device for vehicles, in particular rear light, with a light-emitting unit to generate a predetermined light function. The device comprises a plurality of light sources and an optical unit. The optical unit comprises a light guide with means for the deflection of the light coupled in the same, and a retroreflective unit to generate a retroreflective function. The light guide is designed as a low-profile light guide, which is arranged in the main radiation direction in front of the retroreflective unit. The means for deflecting the light are distributed on or in the low-profile light guide such that the first light beam emitted from the light source and coupled into a narrow side of the low-profile light guide is coupled out at a front flat side of the low-profile light guide to produce the predetermined light function.

Abstract: An illumination device for vehicles, in particular rear light, with a light-emitting unit to generate a predetermined light function. The device comprises a plurality of light sources and an optical unit. The optical unit comprises a light guide with means for the deflection of the light coupled in the same, and a retroreflective unit to generate a retroreflective function. The light guide is designed as a low-profile light guide, which is arranged in the main radiation direction in front of the retroreflective unit. The means for deflecting the light are distributed on or in the low-profile light guide such that the first light beam emitted from the light source and coupled into a narrow side of the low-profile light guide is coupled out at a front flat side of the low-profile light guide to produce the predetermined light function.