Light distributor for a lighting device and lighting device and use of a lighting device
US6457844B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 2001 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | May 8, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2103/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device has a light source and a light distributor arranged under it. Said light distributor has a distributor element which preferably consists of sheet metal and has an extensive main section with an incidence side facing the light source and a number of holes for the passage of light which widen in the direction away from the incidence side, and a collar for each of said holes. Preferably, a diffuser is arranged above the distributor element and possibly a diaphragm, preferably consisting of sheet metal, is arranged above said diffuser. The light distributor deflects and distributes light radiated downward through it, in such a way that said light makes at least a desired angle of, for example, at least 25° with a horizontal plane. The light distributor can be produced with a small height and economically and has a good antidazzle effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.