Electron emitter assembly and method for adjusting a size of electron beams
US7136455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2004 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Dec 31, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4028
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electron emitter assembly and a method for adjusting a size of electron beams are provided. The electron emitter assembly includes a laser configured to emit a first light beam. The electron emitter assembly further includes a lens assembly configured to receive the first light beam. The lens assembly is configured to adjust a size of the first light beam between a first predetermined size and a second predetermined size larger than the first predetermined size. The lens assembly emits the first light beam toward a photo-cathode. The photo-cathode is configured to emit a first electron beam having a third predetermined size when the first light beam having the first predetermined size contacts the photo-cathode. The photo-cathode is further configured to emit a second electron beam having a fourth predetermined size when the first light beam having the second predetermined size contacts the photo-cathode. The electron emitter assembly further includes an anode configured to receive the first and second electrons beams from the photo-cathode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.