US 11,988,355 B2
Light module for a lighting device of a vehicle and method for reducing a color desaturation in a light module for a lighting device of a vehicle
Christian Studeny, Schöppenstedt (DE); Helge Holtorf, Königslutter (DE); and Bernhard Kreipe, Hannover (DE)
Assigned to VOLKSWAGEN AKTIENGESELLSCHAFT, Wolfsburg (DE)
Filed by Volkswagen Aktiengesellschaft, Wolfsburg (DE)
Filed on Jul. 1, 2022, as Appl. No. 17/856,350.
Claims priority of application No. 21183052 (EP), filed on Jul. 1, 2021.
Prior Publication US 2023/0003360 A1, Jan. 5, 2023
Int. Cl. F21S 43/31 (2018.01); F21S 43/239 (2018.01); F21S 43/33 (2018.01); F21Y 115/10 (2016.01)
CPC F21S 43/31 (2018.01) [F21S 43/239 (2018.01); F21S 43/33 (2018.01); F21Y 2115/10 (2016.08)] 19 Claims
OG exemplary drawing
 
1. A light module for a lighting device of a vehicle having:
at least one illuminant and a light-guiding body, which light-guiding body is configured to guide radiation emanating from the illuminant and coupled into the light-guiding body to a light exit surface of the light-guiding body, and having at least one rear wall apparatus which is arranged at least in certain areas in the beam path of ambient radiation incident from externally through the light exit side of the light-guiding body into the light-guiding body; wherein
the rear wall apparatus has at least one first rear wall region and at least one second rear wall region; wherein
the at least one first rear wall region and the at least one second rear wall region differ from one another in terms of reflection and/or absorption properties wherein
the at least one first rear wall region forms a light trap for ambient radiation only;
the light-guiding body is pane-shaped, wherein the extent of the light-guiding body in two spatial directions is substantially larger than in a third spatial direction; and wherein
the rear wall apparatus is arranged opposite the light-guiding body in such a way that radiation emanating from a rear side from the light-guiding body in the direction of the rear wall apparatus directly strikes the rear wall apparatus.