Fiber optic interface for laser spectroscopic Raman probes
US5911017A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1997 |
| Grant date | Jun 8, 1999 |
| Priority date | — |
| Expiry date | Jul 28, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/656
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber optic interface for laser spectroscopic Raman probes incorporating a housing with a window enclosure. The fiber optic interface minimizes stray light interference from window back reflections and provides high photonic efficiency through refractive manipulation of emission and reception fields. The illumination fiber is surrounded by collection fibers. The fiber bundle formed by the illumination fiber and the collection fibers is formed into a conical shape, which creates a refractive surface on the illumination fiber and each of the collection fibers. The refraction at the end faces steers the illumination and collection patterns toward the axis of the illumination fiber. This results in the reflected portion of the illumination light being reflected toward the illumination fiber, and in the collection pattern being coincident with the illumination pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.