Solid state illumination device based on non-radiative energy transfer
US9995460B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2015 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Jul 23, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/01791
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided an illumination device comprising: a wavelength converting layer comprising a photon emitting donor configured to absorb energy to reach an excited state, and a photon emitting acceptor; an energy source configured to provide energy to the donor such that the donor reach the excited state; wherein the donor and the acceptor are selected and arranged at a distance from each other such that non-radiative transfer of excitation energy from the donor to the acceptor occur, and wherein the acceptor is configured to emit a photon at a second wavelength after the transfer of energy; the illumination device further comprising a periodic plasmonic antenna array, arranged on the substrate and embedded within the wavelength converting layer, and comprising a plurality of individual antenna elements arranged in an antenna array plane, the plasmonic antenna array being configured to support a first lattice resonance at the second wavelength, arising from coupling of localized surface plasmon resonances in the individual antenna elements to photonic modes supported by the system comprising the plasmonic antenna array and the wavelength converting layer, wherein the plasmonic an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.