Matches 1 - 50 out of 74 1 2 >


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US20120027182 CATHODE ASSEMBLY FOR AN X-RAY TUBE  
A cathode assembly for an x-ray tube. In one example embodiment, a cathode assembly includes a cathode head, a filament, and first and second focusing tabs. The cathode head defines a recess...
US20140270087 X-RAY GENERATOR INCLUDING HEAT SINK BLOCK  
An x-ray generator includes a housing, a cathode block that is arranged in the housing and emits electrons via a field emission scheme, an anode block that is arranged in the housing and generates...
US20110228909 ELECTRON SOURCE AND CATHODE CUP THEREOF  
An embodiment of the invention relates to a cathode cup (20) comprising a receptacle for holding an electron emitter (21), wherein the cathode cup is provided at least in the area facing the...
US20150016590 Soft X-Ray Curtain Tube  
An elongated x-ray tube that can emit a linear curtain of x-rays along its length. Methods of using an elongated curtain of x-rays.
US20090129549 X-RAY TUBE HAVING A FOCAL SPOT PROXIMATE THE TUBE END  
An x-ray tube having a reduced spacing between the focal spot of an anode and an adjacent end wall of an evacuated enclosure is disclosed. This in turn positions the tube relatively closer to the...
US20090323898 THERMIONIC EMITTER DESIGNED TO CONTROL ELECTRON BEAM CURRENT PROFILE IN TWO DIMENSIONS  
An electron emitter assembly for use in an x-ray emitting device or other electron emitter-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum...
US20110280371 TiO2 Nanotube Cathode for X-Ray Generation  
A device is provided for the generation of x-ray emission from an x-ray source based on titanium dioxide (TiO2) nanotubes grown by electrochemical oxidation. TiO2 nanotubes are used as a cold...
US20110051895 X-RAY SYSTEM WITH EFFICIENT ANODE HEAT DISSIPATION  
X-ray systems for use in high-resolution imaging applications with an improved power rating are provided. An X-ray source comprises at least one integrated actuator unit (206, 206′, 206a or 206b)...
US20120045036 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...
US20140079187 EMISSION SURFACE FOR AN X-RAY DEVICE  
Embodiments of the disclosure relate to electron emitters for use in conjunction with X-ray devices. In one embodiment, the emitter features a round emission area capable of emitting electrons...
US20070183577 Cathode structures for X-ray tubes  
An apparatus and method comprising a cathode structure which can be a cylindrical filament coiled in a helix or which can be constructed of a ribbon or other suitable shape. The cathode structure...
US20120027177 INDUSTRIAL X-RAY TUBE  
An industrial X-ray tube formed by accommodating a cathode and anode in a container having an evacuated interior, in which electrons emitted from the cathode are caused to strike the anode and...
US20120219118 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...
US20100150315 X-RAY SOURCE  
An X-ray source with a cathode (2) that includes a first wire (4) having optionally thermal loops (12, 14) between an emission loop (10) and first and second ends (6, 8). A spiral second wire (30)...
US20110255667 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...
US20100020936 X-RAY TUBE  
An x-ray tube has a vacuum housing supported so that it can rotate around a rotation axis, an anode that is arranged within the vacuum housing and that is connected in a rotationally fixed manner...
US20100316192 EMITTER FOR X-RAY TUBES AND HEATING METHOD THEREFORE  
It is described an emitter (26, 40) for X-ray tubes comprising: a flat foil with an emitting section (30, 46); and at least two electrically conductive fixing sections (31-34; 41-44); wherein the...
US20110188634 X-RAY GENERATION DEVICE AND CATHODE THEREOF  
An x-ray generation device and a cathode thereof are provided. The x-ray generation device comprises the cathode, a focusing device, an anode target, and a glass container. The cathode comprises a...
US20110280377 THERMIONIC SURFACE EMITTER AND ASSOCIATED METHOD TO OPERATE AN X-RAY TUBE  
In a thermionic surface emitter and an associated method to operate an x-ray tube, the surface emitter has a conductor path in its emission surface, the conductor path having at least one current...
US20140029730 TENSIONED FLAT ELECTRON EMITTER TAPE  
An electron beam emitter for generating an electron beam to be directed towards an anode of an X-ray tube for generating an X-ray beam, wherein the electron beam emitter comprises an electrically...
US20140362974 X-RAY GENERATING TUBE, X-RAY GENERATING APPARATUS AND X-RAY IMAGING SYSTEM USING THE SAME  
Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube...
US20140169523 X-RAY TUBE WITH ADJUSTABLE INTENSITY PROFILE  
An X-ray tube includes an emitter, and an electrode assembly. The emitter is configured to emit an electron beam toward a target. The electrode assembly includes at least one electrode having a...
US20140010354 APPARATUS AND METHOD OF MANUFACTURING A THERMALLY STABLE CATHODE IN AN X-RAY TUBE  
An x-ray imaging system includes a detector positioned to receive x-rays, an x-ray tube configured to generate x-rays toward the detector from a focal spot surface, the x-ray tube includes a...
US20120148027 FIELD EMISSION X-RAY TUBE AND METHOD OF OPERATING THE SAME  
Provided is a field emission X-ray tube. The field emission X-ray tube includes a cathode electrode provided to one end of a vacuum vessel and including a field emission emitter, an anode...
US20130301804 ELECTRICALLY HEATED PLANAR CATHODE  
An electrically heated planar cathode for use in miniature x-ray tubes may be spiral design laser cut from a thin tantalum alloy ribbon foil (with grain stabilizing features). Bare ribbon is...
US20120082300 X-RAY TUBE FOR GENERATING TWO FOCAL SPOTS AND MEDICAL DEVICE COMPRISING SAME  
An X-ray tube for generating two focal spots displaced with respect to each other and a medical device using such X-ray tube are proposed. The X-ray tube (1) comprises a cathode (7) and an anode...
US20130039474 Long-Lasting Pulseable Compact X-Ray Tube with Optically Illuminated Photocathode  
Systems and methods are described for a compact x-ray system that uses optical energy for triggering x-ray generation rather than a traditional filament. A photocathode is illuminated and the...
US20140153698 FLAT FILAMENT FOR AN X-RAY TUBE, AND AN X-RAY TUBE  
A flat filament includes a first electron emission surface, a first current supply leg, a second current supply leg, a second electron emission surface disposed laterally of the first electron...
US20080187093 X-RAY GENERATION USING SECONDARY EMISSION ELECTRON SOURCE  
A method and apparatus are provided for generating high frequency electromagnetic energy using a secondary emission electron source. An x-ray source is therefore provided having a primary electron...
US20140254767 CATHODE ASSEMBLY FOR A LONG THROW LENGTH X-RAY TUBE  
Cathode assembly for a long throw length x-ray tube. In one example embodiment, a cathode assembly for an x-ray tube includes an electron emitter, an acceleration region, and a drift region. The...
US20100246766 MINIATURE X-RAY SOURCE DEVICE FOR EFFECTING RADIATION THERAPY  
A miniature X-ray source device for effecting radiation therapy at least comprising a vacuum tube containing a cathode and an anode spaced apart at some distance from each other; emitting means...
US20100195797 THERMIONIC ELECTRON EMITTER AND X-RAY SOUCE INCLUDING SAME  
A thermionic electron emitter (1) is proposed comprising an inner part (2) including a heatable flat emission surface (3) and an outer part (4) including a surrounding surface (6) substantially...
US20120163550 X-RAY GENERATOR  
Provided is an X-ray generator for generating X-rays from an X-ray focal point that is a region in which electrons emitted from a filament impinge upon a rotating anode. The X-ray generator has a...
US20100002842 CATHODE ASSEMBLY FOR RAPID ELECTRON SOURCE REPLACEMENT IN A ROTATING ANODE X-RAY GENERATOR  
A cathode assembly for a rotating anode X-ray source comprises two parts: a focusing part that is mechanically connected to the remainder of the X-ray source and permanently aligned with respect...
US20090041195 LASER STIMULATED CATHODE  
A cathode has an emission layer that thermionically emits electrons upon exposure with a laser beam. The material of the emission layer has a product of density (ρ), measured in kgm3, heat...
US20140056406 RADIATION GENERATING TUBE, RADIATION GENERATING UNIT, AND RADIATION IMAGE TAKING SYSTEM  
A radiation generating tube includes a vacuum envelope formed by an insulating tube, a cathode and an anode. At least one of the cathode and the anode is bonded to the insulating tube via a...
US20140044239 MINIATURIZED HIGH-SPEED MODULATED X-RAY SOURCE  
A miniaturized high-speed modulated X-ray source (MXS) device and a method for rapidly and arbitrarily varying with time the output X-ray photon intensities and energies. The MXS device includes...
US20150262782 X-RAY TUBE DEVICE AND METHOD FOR USING X-RAY TUBE DEVICE  
This X-ray tube device includes an anode and a cathode including an emitter emitting an electron to the anode. The emitter includes an electron emission portion in a flat plate shape, a pair of...
US20100278307 Thermionic Emitter Designed To Provide Uniform Loading and Thermal Compensation  
An electron emitter assembly for use in an x-ray emitting device or other electron emitter-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum...
US20090296888 Device For Generating X-rays And Use Of Such A Device  
Device for generating X-rays, comprising: —a field emission cathode (10) configured to emit electrons when an electrical field is applied to the cathode (10); and—an anode (20), the anode being...
US20110026681 METHOD OF FAST CURRENT MODULATION IN AN X-RAY TUBE AND APPARATUS FOR IMPLEMENTING SAME  
An x-ray imaging system includes a detector positioned to receive x-rays, and an x-ray tube coupled to a mount structure. The x-ray tube is configured to generate x-rays toward the detector and...
US20120321048 ELECTRON EMITTERS FOR X-RAY TUBES  
Electron emitters for x-ray tubes. In one example embodiment, an electron emitter for an x-ray tube includes an electron filament and a plurality of electrical leads. The electron filament defines...
US20100284519 Electron Emitter Apparatus and Method of Assembly  
An electron emitter assembly, and methods of assembly, is disclosed. The emitter assembly includes an electron emitter that is secured to a support device in a manner such that the emitter is...
US20140064453 INTEGRATED BACKSCATTER X-RAY SYSTEM  
The different advantageous embodiments provide a method and apparatus. The apparatus comprises a moveable platform, a housing connected to the moveable platform, a power supply located inside of...
US20120140896 CATHODE STRUCTURES FOR X-RAY TUBES  
An apparatus and method comprising a cathode structure which can be a cylindrical filament coiled in a helix or which can be constructed of a ribbon or other suitable shape. The cathode structure...
US20110058643 SYSTEM AND METHOD FOR GENERATING X-RAYS  
In one embodiment, an X-ray tube is provided. The X-ray tube comprises at least one thermionic cathode configured to generate an electron beam, a target assembly configured to generate X-rays when...
US20100040201 Cathode with a Coating Near the Filament and Methods for Making Same  
One or more components of an x-ray cathode assembly are manufactured using a metal deposition process. The deposition process is carried out by providing a cathode shield and a cathode head with a...
US20150124931 CATHODE FILAMENT ASSEMBLY  
The present invention relates to a cathode for an X-ray tube, an X-ray tube, a system for X-ray imaging, and a method for an assembly of a cathode for an X-ray tube. In order to provide a cathode...
US20080310594 SCANNING X-RAY RADIATION  
X-ray radiation is generated at a target that emits x-ray radiation in response to being struck by accelerated electrons, the electrons being emitted by a cathode that emits electrons in response...
US20130182825 X-RAY TUBE CATHODE WITH MAGNETIC ELECTRON BEAM STEERING  
An x-ray tube cathode with magnetic electron beam steering. In one example embodiment, an x-ray tube cathode includes a cathode head and an electron emitter. The cathode head includes electrically...

Matches 1 - 50 out of 74 1 2 >