Light guide with means to compensate for the gradual loss of light along the guide

摘要

The present invention comprises a transparent body (4) that is generally elongated in the main direction and having an outer facet (12) that forms a diopter with the periphery of the body, and reflects the light rays. At least a first row (16) having inclined facets (20) adapted to emit and a reflective facet (24) that is smaller in size than the corresponding reflective facet (20) of the first row (16). And a light guide (2) including one second row (14, 18). The light reflected by the one or more second rows is added to the light beam from the first row. The widths of the first row and the second row gradually increase and decrease from the light source, respectively, so as to compensate for the gradual loss of light traveling through the light guide.