公开(公告)号：US20240347307A1

公开(公告)日：2024-10-17

申请号：US18036762

申请日：2021-11-19

Applicant: COMET HOLDING AG

Inventor： Adrian Riedo

IPC: H01J35/06 ,  H01J9/385 ,  H01J9/40 ,  H01J35/20

CPC classification number: H01J35/064 ,  H01J9/385 ,  H01J9/40 ,  H01J35/20

Abstract: An X-ray tube includes a vacuum-sealed tube housing evacuated to a pressure of 10−7 mbar or lower, a cathode assembly inside the housing including an electron emitter adapted to emit electrons when heated at a temperature included in a defined working temperature range and at least one component containing carbon in an amount of at least 20% by weight, especially at least 30% by weight, even more especially at least 50% by weight, the at least one component being preferably designed for holding the emitter, and an anode assembly inside the housing including a target layer for receiving electrons emitted by the electron emitter, wherein the electron emitter preferably includes boride, preferably lanthanum hexaboride (LaB6), and wherein the cathode assembly is designed such that if the emitter temperature is included in the working temperature range.

公开(公告)号：US20240312754A1

公开(公告)日：2024-09-19

申请号：US18183338

申请日：2023-03-14

Applicant: The Boeing Company

Inventor： Michael K. Strahan ,  Kyle Eversole

IPC: H01J35/06 ,  H01J19/44 ,  H01J23/07

CPC classification number: H01J35/06 ,  H01J19/44 ,  H01J23/07

Abstract: An electron beam vacuum tube assembly is provides. The electron beam vacuum tube assembly comprises an anode assembly and a cathode assembly. A composite insulator tube provides electrical isolation between the anode assembly and cathode assembly, wherein the anode assembly, cathode assembly, and composite insulator are detachably connected each other.

公开(公告)号：US20240284579A1

公开(公告)日：2024-08-22

申请号：US18582963

申请日：2024-02-21

Applicant: Xelera Research LLC

Inventor： Bruce Dunham ,  John Scott Price

IPC: H05G1/02 ,  H01J35/06 ,  H01J35/16

CPC classification number: H05G1/025 ,  H01J35/06 ,  H01J35/16 ,  H01J2235/1216

Abstract: An x-ray device may include a target that emits x-rays when subjected to electrons, an electron source configured to emit electrons toward the target, an elongated annular first shell connected to and supporting the electron source, and an elongated annular second shell connected to and supporting the target. The first shell and the second shell may be arranged one radially inside the other.

公开(公告)号：US20240266136A1

公开(公告)日：2024-08-08

申请号：US18623938

申请日：2024-04-01

Applicant: MICRO-X LIMITED

Inventor： Robert C. SHEEHY ,  Brian GONZALES ,  Peter YARON ,  Anthony SKEATS ,  Steven TREWARTHA ,  Susanne SAHLOS ,  Gandalf DU PREEZ

IPC: H01J35/06 ,  B82Y15/00 ,  B82Y40/00 ,  C01B32/158 ,  H01J9/02

CPC classification number: H01J35/065 ,  C01B32/158 ,  H01J9/025 ,  B82Y15/00 ,  B82Y40/00 ,  H01J2201/30469

Abstract: The present invention relates to large area field emission devices based on the incorporation of macroscopic, microscopic, and nanoscopic field enhancement features and a designed forced current sharing matrix layer to enable a stable high-current density long-life field emission device. The present invention pertains to a wide range of field emission sources and is not limited to a specific field emission technology. The invention is described as an X-ray electron source but can be applied to any application requiring a high current density electron source.

公开(公告)号：US12027489B2

公开(公告)日：2024-07-02

申请号：US18282005

申请日：2022-03-14

Applicant: NANO-X IMAGING LTD

Inventor： Ukyo Jeong ,  Ghiyuun Kang

IPC: H01L23/00 ,  H01J9/02 ,  H01J35/06

CPC classification number: H01L24/83 ,  H01J9/025 ,  H01J35/065 ,  H01L24/05 ,  H01L24/27 ,  H01L24/29 ,  H01L24/32 ,  H01L24/45 ,  H01L24/48 ,  H01L24/73 ,  H01L24/92 ,  H01L24/06 ,  H01L2224/05073 ,  H01L2224/05155 ,  H01L2224/05573 ,  H01L2224/05644 ,  H01L2224/0603 ,  H01L2224/06181 ,  H01L2224/27442 ,  H01L2224/29139 ,  H01L2224/32227 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/48464 ,  H01L2224/73265 ,  H01L2224/83191 ,  H01L2224/83192 ,  H01L2224/83201 ,  H01L2224/83444 ,  H01L2224/8384 ,  H01L2224/92247

Abstract: A method for fabricating silicon die stacks for electron emitter chips by applying sintering to bind a silicon substrate die to other die layers. Metal powder is applied to the bonding surface of the die, covered with the chip carrier or chip and compressed between two heated plates. The bonding pads of the die may be conductively coupled to corresponding bonding pads of the other die layers.

公开(公告)号：US20240136142A1

公开(公告)日：2024-04-25

申请号：US18070197

申请日：2022-11-28

Applicant: AweXome Ray, Inc.

Inventor： Hong Soo CHOI ,  Young Bae KIM ,  Hyeongu CHO ,  Namkyu LEE ,  Keunsoo JEONG ,  Se Hoon GIHM ,  Jiwon CHOI

IPC: H01J35/06 ,  H01J1/304 ,  H01J35/08 ,  H01J35/14

CPC classification number: H01J35/065 ,  H01J1/304 ,  H01J35/08 ,  H01J35/14 ,  H01J2201/30469 ,  H01J2235/06

Abstract: An emitter, a field emission assembly, and an electromagnetic wave generator are provided, and the emitter is an emitter for emitting electrons in an electromagnetic wave generator and is in the form of a sheet in which a plurality of yarns including carbon nanotube (CNT) fibers are weaved.

公开(公告)号：US11930581B2

公开(公告)日：2024-03-12

申请号：US17732196

申请日：2022-04-28

Applicant: Research Instruments Corporation ,  Brown University

Inventor： Daniel John DeCiccio ,  Christoph Rose-Petruck

IPC: H05G2/00 ,  H01J35/06

CPC classification number: H05G2/008 ,  H01J35/065 ,  H05G2/005 ,  H01J2235/082

Abstract: A modular laser-produced plasma X-ray system includes a liquid metal flow system enclosed within a low-pressure chamber, the flow system including a liquid metal, wherein in at least one location on the liquid metal forms a metal target directly illuminated by laser pulses, a circulation pump within the liquid metal flow system for circulating the liquid metal, a laser pulse emitter configured to transmit laser pulses into the chamber via a laser window, focusing optics, located between the emitter and the metal target, the focusing optics directing the laser pulses to strike the metal target at a target location to form X-ray pulses, and an X-ray window positioned within the chamber to enable the X-ray pulses to exit the chamber.

公开(公告)号：US20240062984A1

公开(公告)日：2024-02-22

申请号：US17766718

申请日：2020-10-16

Applicant: CARESTREAM DENTAL LLC

Inventor： Seshadri JAGANNATHAN ,  Lawrence D. FOLTS

IPC: H01J35/06 ,  H01J9/02

CPC classification number: H01J35/064 ,  H01J9/025 ,  H01J2209/0223

Abstract: A cathode of an electron emitting device is described, where the cathode comprises a carbon nanotube (CNT); a nano-filler material; and a carbonizable polymer, and where the cathode exhibits increased hardness, is formed by high temperature thermal treatment, and is devoid of a substrate. Also described is a method of forming a cathode of an electron emitting device, where the method comprises a) forming a dispersed mixture comprising a carbon nanotube, a nano-filler material, and a carbonizable polymer in a solvent; b) coating and/or extruding the mixture; c) drying the coated and/or extruded mixture to remove at least a substantial portion of the solvent; and d) subjecting the dried mixture to a high temperature thermal treatment; where the method results in the cathode of an electron emitting device having increased hardness.

公开(公告)号：US11901153B2

公开(公告)日：2024-02-13

申请号：US17249558

申请日：2021-03-05

Applicant: PCT Ebeam and Integration, LLC

Inventor： Karl E. Swanson ,  John Charles Drenter ,  Paul Michael Fletcher

IPC: H01J35/08 ,  H01J35/18 ,  H01J35/12 ,  H01J35/06

CPC classification number: H01J35/116 ,  H01J35/13 ,  H01J35/18 ,  H01J35/06 ,  H01J35/186 ,  H01J2235/068 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/165 ,  H01J2235/168 ,  H01J2235/18

Abstract: An x-ray apparatus includes a vacuum chamber that includes a window for exit of x-rays. Electrons are generated at a cathode within the vacuum chamber and accelerated toward a target anode associated with the window. An x-ray generating layer is included as a surface of the target anode to receive the electrons emitted by the cathode and to create x-rays. A blocking path blocks over 70% of the free electrons reaching said target anode from continuing on to exit through the window, while allowing x-rays leaving the x-ray generating layer to continue along the selectively blocking path to exit through the window. The x-ray apparatus is capable of operating at low voltage and relatively high power to reduce the necessary shielding and the corresponding weight of the apparatus yet allow more ready absorption of x-rays by items being irradiated.

公开(公告)号：US11901152B2

公开(公告)日：2024-02-13

申请号：US17874678

申请日：2022-07-27

Applicant: Siemens Healthcare GmbH

Inventor： Peter Geithner ,  Jörg Freudenberger ,  Christoph Jud ,  Anja Fritzler ,  Josef Deuringer ,  Peter Hackenschmied

IPC: H01J35/06 ,  H01J35/24 ,  A61B6/02 ,  A61B6/00 ,  H05G1/52

CPC classification number: H01J35/065 ,  H01J35/24 ,  A61B6/022 ,  A61B6/4007 ,  H01J35/064 ,  H01J2235/068 ,  H05G1/52

Abstract: Some example embodiments provide an x-ray tube for a stereoscopic imaging having an evacuated x-ray tube housing; an electron emitter apparatus in the x-ray tube housing, the electron emitter apparatus including a first field effect emitter with a first emitter surface and a second field effect emitter with a second emitter surface, at least one of the first emitter surface or the second emitter surface being segmented such that a portion of the at least one of the first emitter surface or the second emitter surface can be set relative to the respective overall emitter surface by selectively switching emitter segments of the at least one of the first emitter surface or the second emitter surface; an anode unit in the x-ray tube housing, the anode unit configured to generate x-ray radiation for the stereoscopic imaging as a function of electrons striking two focal points; and a control unit.