Gas sensor comprising a pulsed light source
US12287284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2019 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Aug 9, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0696
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring an amount of a gaseous species present in a gas, the gaseous species absorbing light in an absorption spectral band, comprises placing the gas between a light source and a measuring photodetector. The light source is configured to emit a light wave that propagates through the gas to the measuring photodetector. The light source is activated so as to illuminate the gas, so that the light source emits a light pulse. The method also includes measuring, with the measuring photodetector, a measurement intensity of a light wave transmitted by the gas during the illumination, in a measurement spectral band. The measurement spectral band comprises the absorption spectral band. The light source is activated using a pulsed activation signal, each pulse having a specific form, notably to reduce aging of the source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.