Method for measuring spectral absorption in a body and device therefor
US6559945B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Jan 27, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3504
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The spectral absorption of a body, placed between a source for emitting electromagnetic radiation and a detector for detecting the radiation, is measured. The technique includes emitting the electromagnetic radiation in a determined spectral range towards the body, filtering the electromagnetic radiation, and detecting the electromagnetic radiation attenuated by the absorption due to the body and deducing therefrom a measure of the spectral absorption of the body. The filtering and detection steps are implemented by a detector of the quantum type. The technique also applies to determining the calorific value of a gas, for measuring the energy of electromagnetic radiation, and an apparatus for implementing the technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.