Luminaires for illumination of outdoor panels
US6918684B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2003 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Sep 15, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/812
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Luminaires for illumination of vertical surfaces of predetermined dimensions such as billboards or similar signs, the invention in several embodiments takes the form of reflector assemblies capable of directing light from a light source disposed within each of said luminaires either directly to the vertical surface or to refractive structures located on the luminaires for redirection of light to the vertical surface for even illumination of said surface with minimal light pollution from “spill” light. Lamps used in embodiments capable of providing asymmetrical light distributions are located toward one or the other of side portions and are preferably vertically oriented. A main reflector is curvilinear in conformation and functions in concert with a secondary reflector located directly behind the lamp to direct light onto desired portions of a vertical surface. Luminaires configured according to the invention also utilize side reflectance panels for light control and for maximizing light directed onto a vertical surface, said luminaires also preferably including refractive lens elements for redirection of light onto the vertical surface. The reflector assemblies of the invention ar…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.