Fluorescence emission ratio imaging thermography for use in heat transfer analysis
US6648506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Sep 7, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/3213
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a fluorescent imaging thermographic method and system for use particularly in surface temperature measurements, which are reproducible over time. The invention provides a temperature-sensitive fluorescent probe comprising a rare earth compound in an ultraviolet and fluorescence transparent medium wherein the intensity of fluorescence varies as the temperature varies, in particular, provided are probes comprising Europium(1,1,1,5,5,5-hexafluoroacetylacetone)3 for measuring temperatures greater than 24° C., and Terbium(1,1,1,5,5,5-hexafluoroacetylacetone)3 for measuring temperatures less than 24° C. The probe is applied as a layer to a surface, exposed to fluorescence-inducing energy, and emitted fluorescence measured. A ratio imaging algorithm enables the temperature at each location on the surface to be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.