Particle detecting device and particle detecting method
US9291542B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2014 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Dec 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6421
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A particle detecting device includes: a light source that illuminates, with an excitation beam, a fluid that contains a plurality of particles; a fluorescence measuring instrument that measures, at at least two different wavelengths, fluorescence that is produced in a region that is illuminated by the excitation beam; a scattered light measuring instrument that measures scattered light that is produced in a region that is illuminated by the excitation beam; an interference status evaluating portion that evaluates whether the scattered light that is measured is producing constructive interference or producing destructive interference; and a particle counting portion that counts a plurality of particles depending on the measured interference of the measured light, and counts fluorescent particles that are subject to detection, from among the plurality of particles, based on a wavelength of fluorescent measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.