Positive contrast roadway lighting system
US7547116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2007 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | Aug 9, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/103
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminaire assembly generally includes a reflector having a center of symmetry and a lamp supported within the reflector, wherein the lamp is offset from the reflector center of symmetry, whereby light emitted from the lamp is reflected by the reflector in an asymmetric pattern. In a method of illuminating a roadway having traffic moving in a flow direction, a luminaire having a reflector and a lamp is mounted at a side of the roadway and light emitted from the lamp is reflected with the reflector whereby a greater portion of the reflected light is directed in the traffic flow direction than is directed against the traffic flow direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.