Gas cell adapted for carbon dioxide
US6943885B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2001 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Feb 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/0382
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a gas cell (1) adapted for carbon dioxide and including a cavity (10) which is adapted for a chosen gas volume, a light s source (11) and a light-bundle receiving unit (12). The light source (11) is placed in a focal point (F) associated with a partially elliptical mirror surface (13) forming a reflector for the light source (11) and a first defining surface of the cavity (10). Two other cavity-defining surfaces are comprised of gas-conducting surfaces (14a, 14b) orientated from the end-parts (13a′, 13b′) of the mirror surfaces (13a, 13b). The light-bundle receiving unit (12) is placed in a second focal point (F′) associated with the partially elliptical mirror surfaces (13a, 13b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.