Cone penetrometer fiber optic raman spectroscopy probe assembly
US6018389A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1997 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Jul 22, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/651
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chemically and mechanically robust optical Raman spectroscopy probe assembly that can be incorporated in a cone penetrometer (CPT) for subsurface deployment. This assembly consists of an optical Raman probe and a penetrometer compatible optical probe housing. The probe is intended for in-situ chemical analysis of chemical constituents in the surrounding environment. The probe is optically linked via fiber optics to the light source and the detection system at the surface. A built-in broadband light source provides a strobe method for direct measurement of sample optical density. A mechanically stable sapphire window is sealed directly into the side-wall of the housing using a metallic, chemically resistant, hermetic seal design. This window permits transmission of the interrogation light beam and the resultant signal. The spectroscopy probe assembly is capable of accepting Raman, Laser induced Fluorescence, reflectance, and other optical probes with collimated output for CPT deployment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.