LED spotlight including elliptical and parabolic reflectors
US8403530B2 · kind B2 · utility
28Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2010 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Nov 4, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
One or more layers of LEDs shine light into an array of elliptical reflectors. Each elliptical reflector has an LED at one focal point and shares the second focal point with a larger parabolic reflector that collimates the light. A hole in the center of the parabolic reflector receives additional LEDs, with or without collimation optics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.