Device and method for multiparameter measurements of microparticles in a fluid
US8599378B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Feb 2, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/1479
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method of classifying and flow measuring the refringence of at least two populations of particles present in a fluid. The method uses a light source that has small coherence time, with a coherence length Lc<100 μm, that is used under extinction conditions at a center wavelength selected as a function of a range of volumes and of a range of refractive indices expected for the particles under consideration. The method uses a device that, together with the light source, forms a converging illuminating beam of aperture angle that is selected as a function of the range of volumes and the range of refractive indices expected for the particles under consideration at the selected center wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.