High angular intensity Schottky electron point source
US6798126B2 · kind B2 · utility
13Cited by
6References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 2002 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | May 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/06316
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron emitter is produced by applying a work function lowering material that does not require an extensive heating step before the material will function to lower the work function. By eliminating the extensive heating step, a small radius, highly tapered emitter tip will retain its shape to consistently produce a high angular intensity at a reasonable output power level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.