Focal spot temperature reduction using three-point deflection
US7496180B1 · kind B1 · utility
17Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2007 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Aug 29, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J35/153
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An x-ray tube includes an anode comprising a focal track and a cathode assembly configured to emit an electron beam toward a focal spot on the focal track. The x-ray tube also includes a controller configured to wobble the electron beam among a plurality of focal points in a direction tangent to the focal track. The plurality of focal points includes at least one focal point that is bounded by a pair of boundary focal points. The controller is further configured to delay a wobble of the electron beam away from the at least one focal point for a pre-determined amount of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.