Lighting device for vehicles having two light sources and a free form light directing member for emitting two light distributions
A lighting device for vehicles having a first light source, a second light source and a light-shaping apparatus allocated to the first light source and the second light source, wherein the second light source is offset in relation to the first light source, at least in a direction running perpendicularly to the optical axis of the light-shaping apparatus. The light that is incident on the light-shaping apparatus from the first light source is deflected to produce a first light function and wherein the light that is incident on the light-shaping apparatus from the second light source is deflected to produce a second light function, wherein the light-directing surface of the light-shaping apparatus has a free-form surface comprising multiple varyingly curved surface elements.
1. A lighting device for vehicles comprising:
a first light source;
a second light source; and
a light-shaping apparatus allocated to the first light source and the second light source, wherein the second light source is offset in relation to the first light source at least in a direction running substantially perpendicularly to the optical axis of the light-shaping apparatus,
wherein the light that is incident on the light-shaping apparatus from the first light source is deflected to produce a first light function,
wherein the light that is incident on the light-shaping apparatus from the second light source is deflected to produce a second light function, and
wherein a light-directing surface of the light-shaping apparatus has a free-form surface comprising at least two varyingly curved surface elements such that the light that is incident on the entire area of the free-form surface from the first light source is deflected to produce a main beam distribution as a first light function and such that the light that is incident on the entire area of the free-form surface from the second light source is deflected to produce a dynamic cornering light distribution as a second light function.
2. The lighting device according to claim 1 , wherein the varyingly curved surface elements of the free-form surface are formed such that the light emitted onto the free-form surface from the second light source and offset to the first light source in the main beam direction is deflected in a horizontal direction in a scattering angle range of 60° to 80° and is deflected in a vertical direction below a horizontal zero line.
3. The lighting device according to claim 1 , wherein the varyingly curved surface elements of the free-form surface are formed in such a way that the light that is incident on the free-form surface from the first light source is scattered in the horizontal direction in a scattering angle range of 30° to 40° and in a vertical direction above the horizontal zero line.
4. The lighting device according to claim 1 , wherein the varyingly curved surface elements of the free-form surface are formed in such a way that the light that is incident on the free-form surface from the first light source and the second light source is deflected in a vertical direction in a scattering angle range of 8° to 15°.
5. The lighting device according to claim 1 , wherein the first light source and the second light source are not arranged in a focal point of the curved surface elements.
6. The lighting device according to claim 1 , wherein the light-shaping apparatus is formed by at least two lenses.
7. The lighting device according to claim 1 , wherein the light-shaping apparatus is formed by a reflector.
8. The lighting device according to claim 1 , wherein the first light source and the second light source have optical axes running substantially in parallel.
9. The lighting device according to claim 1 , wherein the first light source and the second light source are each formed as an LED light source.
10. The lighting device according to claim 1 , wherein the first light source and the second light source are attached to a common heat sink.