Realtime optical method and system for detecting and classifying biological and non-biological particles
US9851291B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 2016 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | May 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/217
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, apparatuses, and systems for detecting and classifying individual airborne biological and non-biological particles, in real time, based on particle size and polarized elastic scatter. Auto-fluorescence content may also be used along with particle size and polarized elastic scatter for further orthogonal classification. With polarized elastic scattering, the degree of linear or circular depolarization produced from particle morphology, refractive index, internal asymmetric structures and molecular optical activity can be used for classifying individual airborne particles. Alternatively, circular intensity differential scattering (CIDS) or linear intensity differential scattering (LIDS) can be used to discriminate individual particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.