Solid state illumination devices including spatially-extended light sources and reflectors
US10473292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2017 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Nov 20, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/001
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminaire module delivers light with a beam angle of α. The luminaire module includes a light emitting module and a reflector positioned symmetrically about an axis. Light produced by the light emitting module exits the light emitting module from one or more spatially-extended light emitting portions. The light emitting portion(s) is (are) fully contained within a spatially extended notional design envelope which is used to guide the design of reflector and its corresponding reflective surface, such that when any light exiting the light emitting portions through the design envelope strikes the reflective surface of the reflector, the light does not return to the source and escapes from the luminaire module within a beam angle α, with no more than a single reflection from a reflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.