Optical filtering device for detecting gas
US10060848B2 · kind B2 · utility
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4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2015 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Dec 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/2826
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical filtering device, in particular for remote gas detection, including a member comprising a tubular passage accommodating a plurality of reflective structures capable of reflecting infrared wavelengths, said structures being elongated along an axis of the tubular passage and arranged around the axis. The reflective structures comprise means of filtering by absorption of bands of different wavelengths located in the infrared spectral band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.