Apparatuses and methods for generating distributed x-rays
US9786465B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 20, 2013 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Jan 3, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2235/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.