| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 378134000 | With plural cathodes or heaters | 13 |
| 20080226033 | X-RAY APPARATUS WITH AN X-RAY MODULE HAVING INDIVIDUALLY CONTROLLABLE X-RAY SOURCES - An x-ray apparatus has at least one radiator module with a sealed vacuum housing and a high voltage connection. The at least one radiator module extends only partially around an examination space and has at least two x-ray sources that can be controlled individually. | 09-18-2008 |
| 20080260101 | Dual energy X-ray source - A dual energy X-ray source for use in an explosive detection system includes only a single power supply and only a single X-ray tube. The X-ray tube includes only two electron guns and only a single anode. Each electron gun has its own grid and cathode. The X-ray source switches between producing a higher energy X-ray and producing a lower energy X-ray at a frequency of at least 4000 Hz. | 10-23-2008 |
| 20090060141 | X-RAY APPARATUS - An x-ray apparatus that has at least one radiator module ( | 03-05-2009 |
| 20090185661 | VIRTUAL MATRIX CONTROL SCHEME FOR MULTIPLE SPOT X-RAY SOURCE - A system and method for addressing individual electron emitters in an emitter array is disclosed. The system includes an emitter array comprising a plurality of emitter elements arranged in a non-rectangular layout and configured to generate at least one electron beam and a plurality of extraction grids positioned adjacent to the emitter array, each extraction grid being associated with at least one emitter element to extract the at least one electron beam therefrom. The field emitter array system also includes a plurality of voltage control channels connected to the plurality of emitter elements and the plurality of extraction grids such that each of the emitter elements and each of the extraction grids is individually addressable. In the field emitter array system, the number of voltage control channels is equal to the sum of a pair of integers closest in value whose product equals the number of emitter elements. | 07-23-2009 |
| 20100061516 | ELECTRON BEAM CONTROLLER OF AN X-RAY RADIATOR WITH TWO OR MORE ELECTRON BEAMS - An x-ray tube has a number of emitters that generate respective electron beams, and has a common anode at which the electron beams strike on a surface to generate x-rays. A high x-ray dose power with a long lifespan are achieved while being able to quickly vary the x-ray dose power by using a superimposed intensity distribution from the x-ray beams, which is measured by a detector, to optimize the x-ray beams on the surface. | 03-11-2010 |
| 20100226479 | MULTICATHODE X-RAY TUBE - An improved x-ray tube that includes a plurality of cathodes in a region under vacuum is provided. Several wirelessly activatable elements, which are each assigned to a cathode or a group of cathodes, are arranged in the region under vacuum and make an electrically conducting connection of the cathode or the group of cathodes to a cathode control voltage line when receiving a control signal from outside of the region under vacuum. A system that includes the improved x-ray tube and several transmitter elements for the wireless activation of the wirelessly activatable elements is also provided. | 09-09-2010 |
| 20120219118 | LOW VOLTAGE ELECTRON SOURCE WITH SELF ALIGNED GATE APERTURES, FABRICATION METHOD THEREOF, AND X-RAY GENERATOR USING THE ELECTRON SOURCE - An x-ray generating device includes at least a nano-structure based field emission electron source having a self-aligned gate aperture incorporated on a substrate. The device further includes at least an anode target. Associated fabrication method is also described. | 08-30-2012 |
| 20130083899 | DUAL-ENERGY X-RAY TUBES - Dual-energy x-ray tubes. In one example embodiment, a dual-energy x-ray tube includes an evacuated enclosure, an anode positioned within the evacuated enclosure, a first cathode positioned within the evacuated enclosure, and a second cathode positioned within the evacuated enclosure. The first cathode and the second cathode are configured to operate simultaneously at different voltages. | 04-04-2013 |
| 20130259206 | Shielding Electrode for an X-Ray Generator - An x-ray generator includes a voltage source and a voltage divider network coupled thereto, a housing, and an insulator carried within the housing. An emitter cathode is carried within the housing and emits electrons and undesirable conductive particles. In addition, there is a shielding electrode carried within the housing downstream of the emitter cathode and coupled to the voltage divider network. A target is carried within the housing downstream of the at least one shielding electrode. The voltage divider is configured so that the emitter cathode and the shielding electrode have a voltage difference therebetween such that an electric field generated in the housing accelerates electrons emitted by the emitter cathode to toward the target. The shielding electrode is shaped to capture the undesirable conductive particles emitted by the emitter cathode that would otherwise strike the insulator. | 10-03-2013 |
| 20130272503 | FLAT PANEL X-RAY SOURCE - A radiation source which can emit X-ray flux using electron beam currents from a cathode array formed on the window through which the radiation will exit the source. The source can be made in formats which are compact or flat compared with prior art radiation sources. X-ray flux produced by the source can be used for such purposes as radiation imaging, sterilization, decontamination of biohazards or photolithography. | 10-17-2013 |
| 20140177808 | RAPIDLY SWITCHING DUAL ENERGY X-RAY SOURCE - A dual energy X-ray source for use in Homeland Security, Medical, Non-destructive Testing, and other markets includes a power supply, and a single x-ray tube. The X-ray tube includes two cathodes, and a single anode. The electrons from the cathodes travel predominantly along the axis of the x-ray tube, and impact the anode. The grid and/or focus coil direct the electrons so that electrons can pass by the cathode. The cathodes are kept at different potential, such that the tube can rapidly switch energies, and can rapidly switch output flux from each cathode. | 06-26-2014 |
| 20150078532 | X-RAY APPARATUS AND A CT DEVICE HAVING THE SAME - The present application provides an external thermionic cathode distributed x-ray apparatus, comprises: a vacuum box which is sealed at its periphery, and the interior thereof is high vacuum; a plurality of electron transmitting units arranged in a linear array and installed on the side wall of the vacuum box, each electron transmitting unit is independent to each other; an anode installed in the center inside the vacuum box, and in the direction of length, the anode is parallel to the orientation of the electron transmitting unit, and in the direction of width, the anode has a predetermined angle with respect to the plane of the electron transmitting unit; and a power supply and control system having a high voltage power supply, a focusing power supply; a transmitting control means and a control system; the electron transmitting unit having: a heating filament; a cathode connected to the heating filament; an insulated support enclosing the heating filament and the cathode; a focusing electrode, arranged at the upper end of the insulated support by way of locating above the cathode; and a connecting fastener arranged above the focusing electrode and connected to the wall of the vacuum box; wherein, the filament lead is connected to the transmitting control means through the insulated support. | 03-19-2015 |
| 20160189907 | LONGITUDINAL HIGH DOSE OUTPUT, THROUGH TRANSMISSION TARGET X-RAY SYSTEM AND METHODS OF USE - An X-ray tube for accelerating electrons under a high voltage potential, said X-ray tube includes an evacuated elongated housing that is sealed, a through transmission target anode deposited on an inner surface of said elongated housing, said through transmission target anode configured having a cross-sectional center, a cathode structure disposed in said elongated housing, said cathode structure configured to emit the electrons toward said through transmission target anode, two or more filaments disposed linearly in said elongated housing, said two or more filaments linearly positioned end-to-end proximate said cross-sectional center, said evacuated housing configured to vacuum seal therein said two or more filaments, and, thus, such X-ray tube functions to provide a lengthened, elongated, symmetrical radiation field. | 06-30-2016 |
