Photoelectric conversion sensor with shifted arcuate elements
US4882478A · kind A · utility
23Cited by
2References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Mar 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/4716
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A photoelectric conversion sensor for measuring particle size or size distribution based on the light scattering phenomena with excellent precision and higher resolving power. The sensor is characterized in that 8 or more arcuate photoelectric conversion elements each being defined by two concentric arcs with different radii and two adjacent elements in the radial direction are so arranged that the gaps in the radial direction between two adjacent elements in the radial direction can be substantially eliminated by shifting them in the circumferential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.