Spectral discrimination pyrometer
US4605314A · kind A · utility
Inventor
Key dates
| Filing date | Jan 11, 1984 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Jan 11, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/60
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a procedure and a device for determination of the temperature of an object by measurement of electromagnetic radiation emitted by this object. A portion of the radiation emitted by the object of measurement is transmitted by a transmission device to a wavelength dividing device. The wavelength dividing device causes a portion of the spectrum of the radiation corresponding to the spectral sensitivity range of the detector or pair of detectors to be distributed across the radiation-sensitive surface of the detector or pair of detectors. The detector senses the position of the center of gravity of the illuminated spectrum which is converted by the signal processing unit to temperature information, and displayed by an output device. Using a sole position-sensitive detector, the relative magnitude of two currents I.sub.1 and I.sub.2 indicates the position of the center of gravity. When two detectors are used, it is practicable to allow the detector which senses the short-wave portion of the spectrum to be a silicon detector whereas the second detector should be a germanium detector which gives a decreasing sensitivity through the use of a larger portion …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.