Fluorescence based thermometry
US9022649B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2012 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Oct 5, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/3213
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature sensor includes a photon source, a fluorescent element and a photodetector. The fluorescent element includes a temperature-insensitive first fluorophore and a temperature-sensitive second fluorophore. The photodetector includes a first photosensor exhibiting a first spectral responsivity and a second photosensor exhibiting a second spectral responsivity. To measure a temperature of a surface, the fluorescent element may be placed adjacent to the surface and irradiated with a photon beam. First photons emitted from the first fluorophore and second photons emitted from the second fluorophore are collected. The first and second photons may be transmitted as a single dichromatic beam to the photodetector. The photosensors generate two different photodetector output signals, the ratio of which may be correlated to temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.