Device for measuring three-dimensional velocity, size, and/or shape of particles
US12078584B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2021 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Mar 15, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/1497
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A velocimeter/nephelometer for measuring the three-dimensional velocity and/or size and/or shape of a particle. A set of laser interferometers and a set of photodiode detectors are arranged on a two-dimensional platform. Each laser interferometer produces a laser beam, with the beams intersecting within an inner area of the platform. Two of the laser interferometers produce like-oriented fringe patterns with an angular separation between the propagation direction of their beams of ninety degrees. A third of the laser interferometers produces a beam with the fringe pattern oriented orthogonal to the fringe patterns of the other two laser interferometers. Each detector is positioned and filtered to detect light from an associated laser interferometer, the light having been scattered by a particle as the particle passes through a volume of observation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.