Frequency- and amplitude-modulated narrow-band infrared emitters
US9870839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2017 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Jan 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N15/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
IR emission devices comprising an array of polaritonic IR emitters arranged on a substrate, where the emitters are coupled to a heater configured to provide heat to one or more of the emitters. When the emitters are heated, they produce an infrared emission that can be polarized and whose spectral emission range, emission wavelength, and/or emission linewidth can be tuned by the polaritonic material used to form the elements of the array and/or by the size and/or shape of the emitters. The IR emission can be modulated by the induction of a strain into a ferroelectric, a change in the crystalline phase of a phase change material and/or by quickly applying and dissipating heat applied to the polaritonic nanostructure. The IR emission can be designed to be hidden in the thermal background so that it can be observed only under the appropriate filtering and/or demodulation conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.