Remote particle counter for remote measurement of the number and size distribution of suspended fine particles in the atmosphere
US7117101B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2004 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Apr 30, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/4709
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A remote particle counter comprising a pulsed laser generator, laser light emitting optics, scattered light collecting optics, a high-sensitivity two-dimensional photo detector as a scattered light detecting portion having a fast gating capability such as a CCD camera, and a control and measure system, wherein suspended fine particles forming aerosols in the atmosphere which are far away from the site of laser emission are illuminated with laser light, the resulting backward scattered light from the individual fine particles is detected as image, and the number and size distribution of the suspended fine particles are measured at a remote site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.