Lighting device
View Patent ↗A lighting device may include: a plurality of light sources; and a plurality of waveguides; wherein the waveguides each have a light coupling-in surface and a light coupling-out surface; wherein the light coupling-in surfaces are respectively assigned a light-emitting surface of a light source, such that light emitted by the light-emitting surface of the light source impinges on the light coupling-in surface of the waveguide assigned thereto; wherein the light coupling-out surfaces of the waveguides are arranged in a matrix-like manner; wherein the light coupling-in surface of the respective waveguide is smaller than the light-emitting surface of the light source assigned to said waveguide, and a grating-like optical diaphragm having grating cells is provided, which is arranged in the region of the light coupling-in surfaces of the waveguides, such that light coupling-in surfaces belonging to different waveguides are arranged in different grating cells of the grating-like optical diaphragm.
1. A lighting device, comprising:
a plurality of semiconductor light sources; and
a plurality of optical waveguides;
wherein the optical waveguides each have at least one light coupling-in surface and a light coupling-out surface;
wherein the light coupling-in surfaces of the optical waveguides are respectively assigned a light-emitting surface of at least one semiconductor light source, such that light emitted by the light-emitting surface of the at least one semiconductor light source impinges on the light coupling-in surface of the optical waveguide assigned thereto;
wherein the light coupling-out surfaces of the optical waveguides are arranged in the form of a matrix;
wherein the light coupling-in surface of the respective optical waveguide is smaller than the light-emitting surface of the at least one semiconductor light source assigned to said optical waveguide, and an optical diaphragm embodied as a grating having grating cells is provided, which is arranged in the region of the light coupling-in surfaces of the optical waveguides, such that light coupling-in surfaces belonging to different optical waveguides are arranged in different grating cells of the optical diaphragm embodied as a grating.
2. The lighting device of claim 1 ,
wherein the optical diaphragm embodied as a grating has blackened surfaces.
3. The lighting device of claim 1 ,
wherein the optical diaphragm embodied as a grating is designed as part of a mount for the optical waveguides.
4. The lighting device of claim 1 ,
wherein the optical waveguides are connected to one another in the region of their light coupling-out surfaces.
5. The lighting device of claim 4 ,
wherein the optical waveguides are connected to one another in the region of their light coupling-out surfaces by a common transparent cover.
6. The lighting device of claim 1 ,
wherein the light coupling-out surfaces of neighboring optical waveguides are arranged alongside one another without gaps.
7. The lighting device of claim 1 ,
wherein the light coupling-out surfaces of the optical waveguides are embodied in a quadrilateral or hexagonal fashion.
8. The lighting device of claim 1 ,
wherein the optical waveguides are embodied in a conical fashion, such that the light coupling-in surface is arranged at a conically tapered end of the optical waveguide and the light coupling-out surface is arranged at a conically widened end of the optical waveguide.
9. The lighting device of claim 1 ,
wherein the optical waveguides are designed as Total Internal Reflection optical units.
10. The lighting device of claim 1 ,
wherein the surface of the optical waveguides is embodied in a reflectively coated fashion outside the light coupling-in surface and the light coupling-out surface.
11. The lighting device of claim 1 ,
wherein the lighting device comprises at least one optical lens which is disposed downstream of the light coupling-out surfaces of the optical waveguides with respect to the beam path of the light emitted by the semiconductor light sources.
12. The lighting device of claim 1 ,
wherein the lighting device is designed as part of a vehicle headlight.
13. A lighting device, comprising:
a plurality of light sources; and
a plurality of optical waveguides;
wherein the optical waveguides each have at least one light coupling-in surface and a light coupling-out surface;
wherein the light coupling-in surfaces of the optical waveguides are respectively arranged relative to a light-emitting surface of at least one light source, such that light emitted by the light-emitting surface of the at least one light source enters the optical waveguide via the light coupling-in surface assigned thereto;
wherein the light coupling-out surfaces of the optical waveguides are arranged in the form of a matrix;
wherein the light coupling-in surface of the respective optical waveguide is smaller than the light-emitting surface of the at least one semiconductor light source assigned to said optical waveguide, and a an optical diaphragm embodied as a grating having grating cells is provided, which is arranged in the region of the light coupling-in surfaces of the optical waveguides, such that light coupling-in surfaces belonging to different optical waveguides are arranged in different grating cells of the optical diaphragm embodied as a grating.