Multipass optical device and process for gas and analyte determination
US7876443B2 · kind B2 · utility
51Cited by
1References
43Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2008 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Sep 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3504
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A torus multipass optical device and method are described that provide for trace level determination of gases and gas-phase analytes. The torus device includes an optical cavity defined by at least one ring mirror. The mirror delivers optical power in at least a radial and axial direction and propagates light in a multipass optical path of a predefined path length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.