Single-channel gas concentration measurement method and apparatus using a short-resonator Fabry-Perot interferometer
US5646729A · kind A · utility
151Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1995 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Dec 18, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/1247
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A single-channel gas concentration measurement method and apparatus. According to the method, a radiant source is employed to generate a measuring signal, the measuring signal is subsequently directed to a measurement object containing a gas mixture to be measured, the measuring signal is subsequently bandpass filtered using at least two passband wavelengths, and the filtered measuring signals are detected by a detector. According to the invention, the bandpass filtering step is implemented by a single electrostatically tunable, short-resonator Fabry-Perot interferometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.