Light zoom source using light emitting diodes and an improved method of collecting the energy radiating from them
US7543941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2005 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Jun 5, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus is comprised of a light source radiating into a peripheral forward solid angle and a center forward solid angle. A reflector is positioned to reflect light from the light source from the peripheral forward solid angle into a longitudinal beam about an optical axis of the reflector. A lens is disposed longitudinally forward of the light source for focusing light into a predetermined beam pattern from the center forward solid angle into a skewed beam in a skewed direction with respect to the optical axis of the reflector to project a composite beam of light comprised of the light radiated in the skewed beam and the longitudinal beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.