Optical sampling arrangements
US7619235B2 · kind B2 · utility
4Cited by
5References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2006 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Oct 4, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/054
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infra-red liquid sampling cell has a sapphire base plate with a part-spherical concave recess. A sapphire upper plate is hinged relative to the base plate larger radius of curvature than the recess. When the upper plate is lowered into contact with the base plate its convex surface contacts the liquid sample thereby excluding air bubbles and, when in contact with the edge of the recess, produces a well-defined sample thickness. An infra-red source directs radiation down through both plates and the liquid sample to a detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.