LED light module for omnidirectional luminaire
US8360615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Feb 22, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light module including a single light emitting diode (LED) and a rotationally symmetrical reflective light transformer providing an omnidirectional pattern with a pre-calculated intensity distribution. In alternative embodiments the light module may consist of a plurality of LEDs and the reflective light transformer, having plurality of identical segments, provides an omnidirectional pattern with a pre-calculated intensity distribution as a result of superposition of the limited angle pattern reflected by each segment. In order to provide high efficiency the light transformer reflective surface profile is designed using a given LED's spatial intensity distribution and required intensity distribution across the emitted omnidirectional pattern as a design parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.