Volumetric light emitting device
US9041286B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2014 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | May 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/854
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A volumetric light emitting device includes a substrate, a semiconductor light emitting diode disposed on the substrate and a reflector ring extending axially from the substrate. The reflector ring defines a first volume bounded by the substrate, an inner wall of the reflector ring, and a terminal plane at a distal end of the reflector ring. An encapsulant fills the first volume and encapsulates the semiconductor light emitting diode. A volumetric light conversion element surrounds the reflector ring and the first volume wherein the volumetric light conversion element is adapted to down-convert light emitted from the semiconductor light emitting diode at a first wavelength and emit the down-converted light at a second wavelength. A second volume of encapsulant or scattering material extends axially between the terminal plane and the volumetric light conversion element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.