Headlight for a motor vehicle
View Patent ↗A headlight for a motor vehicle includes a clear, front cover plate ( 12 ), at least one light source ( 14 ), and at least one reflector ( 16 ) associated with the light source ( 14 ). A beam shield ( 14 ) for avoidance of glare produced by headlights of oncoming vehicles is provided, with the beam shield ( 18 ) being disposed between the light source ( 14 ) and the cover plate ( 12 ). The beam shield ( 18 ) has a structured surface ( 26 ) with an arbitrary or selected geometric pattern on an inner side facing said light source ( 14 ).
1. A headlight for a motor vehicle, comprising a clear, front cover plate ( 12 ), at least one light source ( 14 ), at least one reflector ( 16 ) associated with the at least one light source ( 14 ), and a beam shield ( 14 ) for avoidance of glare produced by headlights of oncoming vehicles, said beam shield ( 18 ) disposed between said at least one light source ( 14 ) and said cover plate ( 12 ), wherein the beam shield ( 18 ) has a structured inner surface ( 26 ) with no coating on an inner side facing said at least one light source ( 14 ).
2. The headlight as defined in claim 1 , wherein the structured surface is produced by glazing with a laminate having a roughness and/or a pattern.
3. The headlight as defined in claim 1 , wherein the structured surface is produced by stamping the inner side of the beam shield ( 26 ).
4. The headlight as defined in claim 1 , wherein the structured surface is produced by sand blasting.
5. The headlight as defined in claim 4 , wherein the beam shield ( 18 ) has only a partially structured surface.
6. The headlight as defined in claim 1 , wherein the structured surface has a structure selected from a group consisting of a honeycomb structure, a cross-grid machining guide way structure, a needle-strip structure, a diamond structure, and a pyramid structure.
7. The headlight as defined in claim 1 , wherein the structure surface has a structure having peaks and valleys with increased peak-to-valley height.
8. The headlight as defined in claim 1 , wherein an outer side of the beam shield is at least partially structured by glazing, stamping, or sand blasting.
9. The headlight as defined in claim 1 , wherein the beam shield on the inner side and/or an outer side is chemically treated by etching, maceration, and/or tempering for reducing glare.
10. The headlight as defined in claim 1 , wherein the beam shield is eloxadized at least partially on the inner side and/or on an outer side.
11. The headlight as defined in claim 10 , wherein the beam shield is color-eloxadized on the inner side and/or outer side.
12. The headlight as defined in claim 11 , wherein the inner side of the beam shield is eloxadized to be dark or black.
13. The headlight as defined in claim 1 , wherein the beam shield comprises a top area and a holder and is made of one or two parts.
14. The headlight as defined in claim 13 , wherein said top area is provided with dark or black eloxadized aluminum or embedded aluminum parts.
15. The headlight as defined in claim 1 , wherein the inner side and/or an outer side of the beam shield is chrome-plated.
16. The headlight as defined in claim 1 , wherein an outer side of the beam shield is colored-coated and/or lacquered.
17. The headlight as defined in claim 1 , wherein a top of the beam shield has a cap and wherein the cap is color-lacquered, coated, and/or eloxadized.
18. The headlight as defined in claim 1 , wherein an outer side of the beam shield has a geometric pattern structuring.
19. The headlight as defined in claim 1 , wherein the beam shield is made from a material selected from the group consisting of steel with an aluminum-silicon coating, in particular, from DX53 D+As; steel with an aluminum or aluminum-alloy coating; and aluminum-plated or aluminum-alloy-plated steel.
20. The headlight as defined in claim 1 , wherein the structured surface of the inner side of the beam shield has peaks and valleys and wherein the inner side of the beam shield has an intermediate peak-to-valley height of 0.1 to 3.0 μm.
21. The headlight as defined in claim 1 , wherein the structured surface of the inner side of the beam shield has peaks and valleys and wherein the inner side of the beam shield has an intermediate peak-to-valley height of 1.0 to 3.0 μm.
22. The headlight as defined in claim 1 , wherein the structured surface of the inner side of the beam shield has peaks and valleys and wherein the inner side of the beam shield has an intermediate peak-to-valley height of 1.5 to 3.0 μm.
23. The headlight as defined in claim 1 , wherein a degree of glare of the surface of the inner side of the beam shield is less than 20% with an angle of incidence of 20°, less than 60% with an angle of incidence of 60°, and less than 25% with an angle of incidence of 85°.
24. The headlight as defined in claim 1 , wherein a degree of glare of the surface of the inner side of the beam shield is less than 10% with an angle of incidence of 20°, less than 30% with an angle of incidence of 60°, and less than 12% with an angle of 85°.