Magnetic energy filter
US6441378B1 · kind B1 · utility
2Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Jun 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/057
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A compact magnetic energy filter having at least four magnetic fields to deflect the trajectory of an electron beam from the entrance window to the exit slit. A rotational symmetry axis is located midway between the second and third magnetic fields. The magnetic fields on the opposite sides of the rotational symmetry axis are opposite in polarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.