Interferometer having three electron biprisms
US7750298B2 · kind B2 · utility
5Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2006 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Jul 19, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/228
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An interferometer is disclosed which has upper-stage, intermediate-stage, and lower-stage electron biprisms. The disclosed interferometer operates with an azimuth angle Φ among filament electrodes of the three electron biprisms to arbitrarily control an interference area and an azimuth θ of the interference fringes formed therein, eliminates Fresnel fringes generation, and allows independent control of an interference fringe spacing s and the azimuth θ of the interference fringes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.