Electronic control of rotating anode microfocus x-ray tubes for anode life extension
US4631742A · kind A · utility
21Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1985 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Feb 25, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J35/147
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Anode life in an x-ray tube is extended by applying a reduced power density to the anode to afford controlled heating of the anode to a predetermined ductile temperature prior to operating the tube at full power. Controlled heating of the anode is accomplished by defocusing the electron beam for a period of time sufficient to enable the anode to reach the desired temperature. The electron beam source of the tube may also be controlled during heating of the anode so as to supply a reduced beam current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.