Precoated resistive lens structure for electron gun and method of fabrication
US4281270A · kind A · utility
2Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1979 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Jun 25, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/624
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron gun includes two electrodes between which a resistive lens structure is mounted. The lens structure comprises a stack of alternate apertured electrode plates and insulator spacer blocks. A high resistance coating of, e.g., cermet or glaze material, is precoated along one side of each spacer block prior to assembly of the stack, so that upon assembly the stack has a high resistance electrical continuity from one end to the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.