Class / Patent application number | Description | Number of patent applications / Date published |
378113000 | Electron beam control | 8 |
20110013748 | RADIATION INSPECTION APPARATUS - A radiation inspection apparatus includes a radiation source, a measurement radiation detecting unit being a rectangle having a long side, and a reference radiation detecting unit that is disposed between the radiation source and an inspection target, the reference radiation detecting unit being disposed near a path of a radiation from the radiation source to the measurement radiation detecting unit not to interrupt the radiation from the radiation source to the measurement radiation detecting unit. An intensity of the radiation source are corrected by calculating a change value of the intensity and the intensity distribution from an output of the reference radiation detecting unit and by correcting the output of the measurement radiation detecting unit based on the change value. | 01-20-2011 |
20110255667 | LOW BIAS mA MODULATION FOR X-RAY TUBES - A segmented thermionic emitter is provided. The segmented thermionic emitter has, among other features, a plurality of segments substantially spanning an entire length of the thermionic emitter and aligned substantially parallel with one another. In one embodiment, the segmented thermionic emitter may allow milli-amp modulation of an X-ray tube at voltages less than approximately 2 kV. | 10-20-2011 |
20110286581 | MULTIBEAM X-RAY SOURCE WITH INTELLIGENT ELECTRONIC CONTROL SYSTEMS AND RELATED METHODS - Multibeam field emission x-ray systems and related methods can include cathode elements, an anode assembly spaced from the plurality of cathode elements, and an extraction gate positioned between the plurality of cathode elements and the anode assembly. A potential difference can be applied between the extraction gate and at least one of the cathode elements to cause an emission of electrons from the respective cathode elements. Emission characteristics of the cathode elements can be measured, and the potential difference between the extraction gate and at least one of the cathode elements can be adjusted based on the emission characteristics measured. | 11-24-2011 |
20120039443 | METHOD AND DEVICE FOR LOAD DEPENDENT RESIZING OF A FOCAL SPOT OF AN X-RAY GENERATING DEVICE - In an X-ray generating device ( | 02-16-2012 |
20120045036 | X-Ray Tube Electron Sources - An electron source for an X-ray scanner includes an emitter support block, an electron-emitting region formed on the support block and arranged to emit electrons, an electrical connector arranged to connect a source of electric current to the electron-emitting region, and heating structure arranged to heat the support block. | 02-23-2012 |
20140185776 | APPARATUSES AND METHODS FOR GENERATING DISTRIBUTED X-RAYS - 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. | 07-03-2014 |
20150063546 | APPARATUS AND METHODS TO CONTROL AN ELECTRON BEAM OF AN X-RAY TUBE - Apparatus and methods to control an electron beam of an x-ray tube are provided. One apparatus includes at least one of (i) a first switching unit having a voltage source and a pair of switches connected in series and configured to switch between open and closed positions to change an output voltage to engage or bypass the voltage source or (ii) a second switching unit connected to a voltage source and having a first pair of switches connected in series and a second pair of switches connected in series, wherein the first and second pair of switches are connected in parallel, and wherein the first and second pairs of switches are configured to switch between open and closed position to change an output voltage generated from the voltage source. The first and second switching units are connected in series and a third switching unit provided that is amplitude controllable. | 03-05-2015 |
20150366041 | X-Ray Tube Electron Sources - An electron source for an X-ray scanner includes an emitter support block, an electron-emitting region formed on the support block and arranged to emit electrons, an electrical connector arranged to connect a source of electric current to the electron-emitting region, and heating structure arranged to heat the support block. | 12-17-2015 |