Solid state electron amplifier
US4990766A · kind A · utility
71Cited by
3References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | May 22, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2231/50063
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A microscopic voltage controlled field emission electron amplifier device consists of a dense array of field emission cathodes with individual cathode impedances employed to modulate and control the field emission currents of the device. These impedances are selected to be sensitive to an external stimulus such as light, x-rays, infrared radiation or particle bombardment; so that the field emission current varies spacially in proportion to the intensity of the controlling stimulus. When a phosphorus screen or other suitable responsive element is provided, the device functions as a solid state image convertor or intensifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.