Enhanced emission from plasmonic coupled emitters for solid state lighting
US9647182B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2014 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Jul 22, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
Abstract
There is provided an illumination device (100) comprising an energy source (102) for exciting a photon emitter; a first wavelength conversion layer (104) and a second wavelength conversion layer (106). At least one of the first and second wavelength conversion layer comprises a periodic plasmonic antenna array comprising a plurality of individual antenna elements (108). The wavelength converting medium in the wavelength conversion layer in which the antenna array is arranged comprises photon emitters arranged in close proximity of the plasmonic antenna array such that at least a portion of photons emitted from the wavelength conversion layer are emitted by a coupled system comprising the photon emitter and the plasmonic antenna array. The plasmonic antenna array is configured to support plasmonic-photonic lattice resonances at a frequency range corresponding to the wavelength range of the photon emitter in the layer in which the plasmonic antenna array is arranged, such that light emitted from the plasmonic antenna array has an anisotropic angle distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.