Patent ID: 9684110
Date: 2017-06-20
CPC Classifications: F21S,G02B

Claim:
1. A lighting device for vehicles, having a flat waveguide, said flat waveguide comprising: two opposing flat surfaces for total reflection of the light entering the flat waveguide, at least one light input surface for the entry of light on a light input side of the flat waveguide, a light output surface for emitting the entering light at a light output side of the flat waveguide, wherein the light output surface forms a surface connecting the opposing flat surfaces, wherein a light source is allocated to each of the at least one light input surfaces, and such that each of the at least one light input surfaces has a non-planar form, wherein each of the at least one light input surfaces has a central input section disposed in a main beam direction in front of the light source, and an outer input section adjacent to the central input section, wherein the outer input section includes a concave portion in a first axis and a convex portion in a second axis normal to the first axis, wherein the central input section and the outer input section are shaped such that a first sub-light bundle of the light source striking the central input section strikes a central region of a sub-surface of the light output surface disposed in a main beam direction in front of each of the at least one light input surfaces, and in that a second sub-light bundle of the light source striking the outer input section strikes an outer region of the same sub-surface adjacent to the central region.