Small particle detection system
US4685802A · kind A · utility
24Cited by
3References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 10, 1985 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Apr 10, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/391
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a small particle detection system for use in detecting small particles, which float in a gas, by utilizing the light scattering effect thereof, a detecting cell is disposed in an external optical resonator which is adapted to resonate with the output light from a laser oscillator. When the detecting cell is disposed in the laser oscillating optical resonator, the position is selectively determined; the former is set in the position in the latter in which the diameter of a laser beam is minimal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.