Lighting system and headlamp

1. A lighting system, comprising:

an optical unit comprising a plurality of light guides which are respectively provided for at least one light source and which respectively have an input coupling face, and wherein, on the output side, the light guides are connected via a common connecting portion of the optical unit, the connecting portion having an output face, pointing away from the light guides, for the light emerging from the light guides; and

a holding frame for the optical unit, by means of which the optical unit is fastened to a printed circuit board, having the light sources, of the lighting system;

wherein a spacer arranged at a connecting side of the holding frame is provided for positioning the optical unit, the connecting side pointing away from the output face of the optical unit and the holding frame being connectable to the printed circuit board via the connecting side; and

wherein a collar extends away from the spacer, the collar supporting the spacer on the printed circuit board.

2. The lighting system of claim 1 ,

wherein the holding frame has a receiving space into which the optical unit is insertable, at least in portions, and

wherein a guide is provided in the receiving space for at least one light guide.

3. The lighting system of claim 2 ,

wherein a hold-down member is fastened to the holding frame, the hold-down member anchoring the optical unit in the receiving space,

wherein the hold-down member is embodied as a clamp part which reaches over the holding frame.

4. The lighting system of claim 3 ,

wherein the optical unit is encompassed by a holding flange, by means of which the optical unit supports itself on the holding frame,

wherein at least one abutment projection is embodied on the holding flange, the hold-down member tensioning the optical unit against the holding frame by way of said holding flange.

5. The lighting system of claim 1 ,

wherein the spacer has a continuous bearing opening for a respective light guide of the optical unit.

6. The lighting system of claim 1 ,

wherein the printed circuit board has a plurality of light sources arranged in a matrix-like manner, in the form of light-emitting diodes.

7. The lighting system of claim 1 , further comprising:

a secondary optical unit disposed downstream of the optical unit.

8. The lighting system of claim 1 in combination with a vehicle light source ( 6 ), the combination defining a vehicle headlamp.

9. A lighting system, comprising:

an optical unit comprising a plurality of light guides which are respectively provided for at least one light source and which respectively have an input coupling face, and wherein, on the output side, the light guides are connected via a common connecting portion of the optical unit, the connecting portion having an output face, pointing away from the light guides, for the light emerging from the light guides; and

a holding frame for the optical unit, by means of which the optical unit is fastened to a printed circuit board, having the light sources, of the lighting system;

wherein a spacer arranged at a connecting side of the holding frame is provided for positioning the optical unit, the connecting side pointing away from the output face of the optical unit and the holding frame being connectable to the printed circuit board via the connecting side; and

wherein a step face pointing to the spacer is embodied at a respective light guide, a respective light guide being supportable at the spacer by way of said step face.

10. The lighting system of claim 9 ,

wherein, at a certain temperature, the step faces of the light guides abut against the spacer and a tensioning force is applied to the light guides.

11. The lighting system of claim 9 ,

wherein a respective step face has a ring-shaped or substantially ring-shaped configuration and can be supported on the spacer with a closed or at least substantially closed line contact or area contact.

12. A lighting system, comprising:

an optical unit comprising a plurality of light guides which are respectively provided for at least one light source and which respectively have an input coupling face, and wherein, on the output side, the light guides are connected via a common connecting portion of the optical unit, the connecting portion having an output face, pointing away from the light guides, for the light emerging from the light guides; and

a holding frame for the optical unit, by means of which the optical unit is fastened to a printed circuit board, having the light sources, of the lighting system;

wherein a spacer arranged at a connecting side of the holding frame is provided for positioning the optical unit, the connecting side pointing away from the output face of the optical unit and the holding frame being connectable to the printed circuit board via the connecting side; and

wherein the spacer has a spring, the spring facilitating the spacer to be able to be supported in the holding frame and rendering possible an application of a spring force on said spacer in the direction of the printed circuit board.

13. A lighting system, comprising:

an optical unit comprising a plurality of light guides which are respectively provided for at least one light source and which respectively have an input coupling face, and wherein, on the output side, the light guides are connected via a common connecting portion of the optical unit, the connecting portion having an output face, pointing away from the light guides, for the light emerging from the light guides; and

a holding frame for the optical unit, by means of which the optical unit is fastened to a printed circuit board, having the light sources, of the lighting system;

wherein a spacer arranged at a connecting side of the holding frame is provided for positioning the optical unit, the connecting side pointing away from the output face of the optical unit and the holding frame being connectable to the printed circuit board via the connecting side; and

wherein at least one reference geometry is embodied on the holding frame or on the printed circuit board, the reference geometry passing through a continuous reference recess of the spacer and being immersed in a reference recess of at least one of the printed circuit board or of the holding frame.