LED front lighting arrangement
US9273843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2011 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | May 11, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/47
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting arrangement for use in automotive front lighting and a method of producing such an arrangement are described. At least one LED lighting element 40 is provided for emitting light. A collimator 10 is provided for forming an emission pattern of the emitted light, which is subsequently projected by a secondary optic arrangement 42. The collimator 10 comprises a cutoff reflector surface 18 with a front edge 30 and a back edge 32. The back edge 32 is located adjacent to the LED lighting element 40. The front edge is spaced from the back edge 32 in a depth direction X, A. The front edge 30 is arranged as a shielding edge for forming a light/dark cutoff in the emission pattern. First and second lateral reflector surfaces 26a, 26b are arranged opposite to each other adjacent to the LED lighting element 40. The front edge 30 of the cutoff reflector surface 18 is arranged within a focal area of the secondary optic arrangement 42. For providing a beam pattern well suited for automotive front lighting, the first and second lateral reflector surfaces 26a, 26b extend further into the depth direction A, X than the cutoff reflector surface 18.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.