Method and apparatus for measuring the sum of the radii of particles in a collection
US4037964A · kind A · utility
11Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1976 |
| Grant date | Jul 26, 1977 |
| Priority date | — |
| Expiry date | Jan 15, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/4716
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is disclosed a Fraunhofer plane spatial filter design for use in filtering the forward scattered light from a collection of particles to obtain an indication of the sum of the radii of the particles as a direct function of the total diffracted light flux passed by the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.