Emitter devices for use in X-ray tubes
US9711320B2 · kind B2 · utility
3Cited by
26References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2014 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Jun 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J35/065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An emitter device having an emission surface includes a plurality of ligaments configured to emit electrons in response to an applied electric field resulting from an applied electrical voltage. Further, the emitter device includes a plurality of slots configured to provide physical separation between two or more adjacently disposed ligaments of the plurality of ligaments, where one or more slots of the plurality of slots define an electrical path. Moreover, the emitter device includes a low work function layer disposed on at least a portion of a ligament of the plurality of ligaments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.