Cold cathode for infrared image tube
US4000503A · kind A · utility
20Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 2, 1976 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | Jan 2, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cold cathode for an image-type tube such as a vidicon. The cathode features a negative electron affinity surface and a field enhanced electron ejection method. The photons generate electron-hole pairs in a compound semi-conductor structure having Group III and Group V compounds to form a heterojunction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.