Sensor arrangement for characterising particles
US11371928B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2021 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Dec 17, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G2/0082
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor arrangement characterizes particles. The arrangement has an emitter with a laser source that generates a laser beam; a mode converter that generates a field distribution of the laser beam, which at each position has a different combination of a local intensity and a local polarization direction of the laser beam; and focusing optics that focus the field distribution of the laser beam onto at least one measurement region, through which the particles pass, in a focal plane. A receiver is also provided with analyzer optics configured to determine polarization-dependent intensity signals of the field distribution of the laser beam in the at least one measurement region; and an evaluator configured to characterize the particles, including the particle position, the particle velocity, the particle acceleration, or the particle size, using the polarization-dependent intensity signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.