LED area lighting optical system
US9159521B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2010 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Feb 10, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dual-reflector assembly includes an upper reflector and a lower reflector. The upper reflector includes a proximal end and a distal end. The lower reflector includes a proximal end and a distal end. A light source is positioned between the proximal ends of the upper reflector and the lower reflector. The upper reflector surrounds at least a portion of the lower reflector. The shape and orientation of the dual-reflector assembly can be formed by placing a cup reflector having an upper edge profile and a lower edge profile a predetermined distance away from a rotational axis and at a desired orientation, rotating the cup reflector around the rotational axis, obtaining the shape and orientation of the upper reflector and the lower reflector from the rotating upper edge profile and the rotating lower edge profile, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.