Raman immersion probe systems and methods
US10976259B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 8, 2019 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Oct 8, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0846
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Immersion Raman probes use collimated light as opposed to a diverging fiber bundle or lens-based focusing geometry to deliver and collect light to and from a sample, thereby eliminating problems associated with chromatic aberration. The probes convey counter-propagating excitation and collection beams to and from a distally sealed, signal-transmissive optical component such as a window immersed, in contact with, or otherwise exposed to a sample volume. The counter-propagating excitation and collection beams pass directly through the sealed optical component and into the sample volume in collimated form for Raman analysis thereof. The probe may further include a baffled sample chamber coupled to the distal end of the probe optic body, with one or more optical elements to reflect the counter-propagating beams. The sample chamber may be fixed or axially movable to facilitate path length adjustment. The invention finds utility in process Raman, microscopy and other applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.