X-ray tube electrodes
US7149282B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2001 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Nov 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2235/164
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A miniaturized X-ray source is disclosed. It comprises an anode structure (43) and a cathode structure (41), each having an essentially pointed portion (44, 42), wherein at least the pointed portions being directed towards each other and enclosed in a vacuum cavity (49). The anode structure has an essentially dome shaped structure having a first essentially flat part (46) surrounded by a second essentially flat part (48), connected by a wall section (47), such that said first and second parts are located at different levels. The pointed portion is provided on said first flat portion and having an extension such that the apex of said pointed portion does not extend beyond the level of said second essentially flat part. A method of making an X-ray source is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.