Temperature measurement with combined photo-luminescent and black body sensing techniques
US5183338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1991 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Dec 13, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/048
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
High temperature range black body techniques are combined with lower temperature range photoluminescent techniques to provide an optical method and apparatus for measuring temperature over a very wide range. Among the various optical probe configurations disclosed which combine the black body and photoluminescent technologies is an optical temperature measuring probe including an elongated transparent light pipe with a black body cavity and a photoluminescent material adjacent one end of the light pipe. Signal detection and processing can be combined, and temperature measurements made by the photoluminescent technique within an overlap of the two temperature ranges can be used to calibrate measurements made in the higher range by the black body technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.