Lighting device for a motor vehicle comprising a light guide
An optical lighting module for a motor vehicle including a primary optical element having a first rear portion with a plurality of light guides of longitudinal main axis arranged along at least one transverse row, each comprising an output front end face for a secondary light beam. Also included is a front portion which has a common output front face for the secondary light beams, wherein the front face of the front portion is conformed to spread the secondary light beams at least in a vertical direction.
1. An optical lighting module for a motor vehicle, the optical lighting module comprising:
at least two parallel transverse rows of light guides;
a first rear portion including the light guides arranged along one of the at least two parallel transverse rows, each light guide comprising an output front end face for a light beam; and
a front portion which has a front face for the light beam, wherein the front face of the front portion is conformed to spread the light beam at least in a vertical direction, an output face of the front portion having transverse vertical end strips, each incurved about a transverse axis to spread the light beam vertically emitted by one of the two parallel transverse rows of light guides.
2. The optical module according to claim 1 , wherein the output face of the front portion comprises a central strip which extends vertically between two transverse vertical end strips and which has, in a longitudinal vertical cross section, a vertical rectilinear form.
3. The optical module according to claim 1 , wherein at least one transverse end section of the output face of the front portion has a curvature about a vertical axis to spread the light beam emitted by a corresponding one of the two parallel transverse rows of light guides in a transverse direction.
4. The optical module according to claim 3 , wherein two transverse end sections of the output face of the front portion each have a curvature about a vertical axis to spread the light beam emitted by the corresponding one of the two parallel transverse rows of light guides in a transverse direction.
5. The optical module according to claim 1 , wherein a central section of the output face of the front portion extending between two transverse end sections has a hemicylindrical form.
6. The optical module according claim 5 wherein the central section extends opposite the two parallel transverse rows of light guides except for the two transverse end sections.
7. The optical module according to claim 1 , wherein each light guide is associated a light-emitting diode.
8. The optical module according to claim 1 , wherein a light beam producing an adaptive lighting function is emitted.
9. A motor vehicle lighting device comprising the optical module according to claim 1 .
10. A lighting device according to claim 9 , wherein the lighting device further comprises a low beam module.
11. The lighting device according to claim 10 , wherein the output face of the front portion comprises a central strip which extends vertically between two vertical end strips and which has, in a longitudinal vertical cross section, a vertical rectilinear form.
12. The lighting device according to claim 10 , wherein at least one transverse end section of the output face of the front portion has a curvature about a vertical axis to spread the light beam emitted by a corresponding one of the two parallel transverse rows of light guides in a transverse direction.
13. The lighting device according to claim 10 , wherein a central section of the output face of the front portion extending between two transverse end sections has a hemicylindrical form.
14. The lighting device according to claim 10 , wherein each light guide is associated with a light-emitting diode.
15. The lighting device according to claim 10 , wherein a light beam producing an adaptive lighting function is emitted.
16. A motor vehicle lighting device comprising the optical module according to claim 10 .