Electron gun emitting under high voltage, in particular for electron microscopy
US9048057B2 · kind B2 · utility
0Cited by
8References
16Claims
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Key dates
| Filing date | Sep 16, 2011 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Sep 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A field-emission electron gun including an electron emission tip, an extractor anode, and a mechanism creating an electric-potential difference between the emission tip and the extractor anode. The emission tip includes a metal tip and an end cone produced by chemical vapor deposition on a nanofilament, the cone being aligned and welded onto the metal tip. The electron gun can be used for a transmission electron microscope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.