Solar powered airfield light
US8425076B2 · kind B2 · utility
11Cited by
20References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2009 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Mar 31, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solar-powered airfield light provides high angle light up to about 90°. A solar panel is mounted atop the enclosure but does not overlie a curved transparent shoulder extending upward from the transparent generally cylindrical side walls of the enclosure. An optical element within the enclosure surrounds an LED light source so as to direct light emanating from the LED in two preferential beams, one directed to the shoulder and the other directed to the side walls. A portion of the light impinging on the curved shoulder is redirected to high angles to comply with high angle light requirements for airfield lights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.