Raman immersion probe optics
US11086123B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 4, 2020 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Feb 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Achromatically corrected Raman immersion probes minimize chromatic and/or spherical aberration through the use of an achromat, apochromat, refractive/diffractive optics as opposed to a single lens geometry. The improved end optics are adapted for use with a probe body carrying a laser excitation and/or collection beam associated with Raman analysis. The achromatically corrected optic to focus the beam onto or within a sample. The sample may be a gas, a liquid, or a partial liquid such as a slurry. The achromatically corrected optic may be an achromat comprising a lens doublet or an achromat comprising a lens triplet or more optical elements. In one preferred embodiment, the achromatically corrected optic may be an apochromatic optic. A disclosed system includes the achromatically corrected end optic and Raman probehead operative to send and receive counter-propagating laser excitation and collection beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.