Device for detecting particles in air
US11619574B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2020 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Dec 22, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/0883
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The inventive concept relates to a device for detecting particles in air, said device comprising a receiver for receiving a flow of air comprising particles, a sample carrier, and a particle capturing arrangement. The particle capturing arrangement is configured to separate the particles from the flow of air for and to collect a set of particles on a surface of the sample carrier. The device further comprises a light source configured to illuminate the particles on the sample carrier, such that an interference pattern is formed by interference between light being scattered by the particles and non-scattered light from the light source. The device further comprises an image sensor configured to detect the interference pattern. The device further comprises a cleaner configured for cleaning the surface of the sample carrier for enabling re-use of the surface for collection of a subsequent set of particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.