公开(公告)号：US10806422B2

公开(公告)日：2020-10-20

申请号：US16097636

申请日：2017-05-24

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roland Proksa ,  Daniela Muenzel

IPC: A61B6/00 ,  H05G1/20 ,  H05G1/08 ,  H01J35/04 ,  H01J35/06 ,  H01J35/08 ,  H05G1/58

Abstract: The present invention relates to an apparatus for generating X-rays. It is described to produce (210) with a power supply (30) a voltage. A cathode (22) of an X-ray source (20) is positioned (220) relative to an anode (24) of the X-ray source. Electrons are emitted (230) from the cathode. Electrons emitted from the cathode interact (240) with the anode with energies corresponding to the voltage. X-rays are generated (250) from the anode, wherein the electrons interact with the anode to generate the X-rays. The X-ray source is controlled (260), such that a plurality of first X-ray pulses is generated each having a first X-ray flux, wherein the first X-ray pulses are temporally separated from each other. The X-ray source is controlled (270), such that a least one second X-ray pulse is generated having a second X-ray flux that is substantially less than the first X-ray flux, wherein the at least one second X-ray pulse is generated temporally between consecutive pulses of the first X-ray pulses.

公开(公告)号：US10804063B2

公开(公告)日：2020-10-13

申请号：US15266636

申请日：2016-09-15

Applicant: General Electric Company

Inventor： Thomas Robert Raber ,  Vance Scott Robinson ,  Yong Liang

IPC: H01J35/08 ,  B32B15/20 ,  B32B9/04 ,  B32B7/12 ,  H01J35/10 ,  H01J35/12 ,  B32B7/04 ,  B32B7/02 ,  B32B7/10 ,  B32B9/00 ,  B32B15/04 ,  B32B37/06

Abstract: Fabrication of a multi-layer X-ray source is disclosed using bulk structures to fabricate a multi-layer target structure. In one implementation, layers of X-ray generating material, such as tungsten, are interleaved with thermally conductive layers, such as diamond layers. To prevent delamination of the layers, various mechanical, chemical, and/or structural approaches may also be employed.

公开(公告)号：US10784069B2

公开(公告)日：2020-09-22

申请号：US16340449

申请日：2017-10-19

Applicant: Excillum AB

Inventor： Tomi Tuohimaa ,  Per Takman ,  Andrii Sofiienko

IPC: H01J35/08 ,  H01J35/30 ,  H01J35/14 ,  H01J35/18 ,  H05G1/52

Abstract: A system and method for generating X-ray radiation. The system includes an electron source operable to generate an electron beam and an X-ray target for generating X-ray radiation upon interaction with the electron beam. The method includes moving the electron beam over an edge separating a first region and a second region of the X-ray target, wherein the first region and the second region have different capability to generate X-ray radiation upon interaction with the electron beam. The system allows for a lateral extension of the electron beam to be determined based on a change in a quantity indicative of the interaction between the electron beam and the first region and between the electron beam and the second region, and the movement of the electron beam.

公开(公告)号：US20200227228A1

公开(公告)日：2020-07-16

申请号：US16734632

申请日：2020-01-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo JEONG

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

Abstract: An embodiment of the inventive concept provides an X-ray tube including a chamber having a hollow pillar shape using a first axis as a central axis, a cathode electrode disposed on a bottom surface of the chamber, an emitter provided at a position at which the cathode electrode meets the first axis, an anode electrode including a through-hole using the first axis as a central axis and a target layer inclined to the first axis, a gate electrode disposed between the cathode electrode and the anode electrode and having an opening exposing the emitter, a focusing electrode disposed between the gate electrode and the anode electrode, a window spaced apart from the target layer of the anode electrode, and a window electrode provided on a top surface of the chamber to fix a side surface of the window. Here, the window electrode is grounded.

公开(公告)号：US20200219694A1

公开(公告)日：2020-07-09

申请号：US16827932

申请日：2020-03-24

Applicant: Accuray Incorporated

Inventor： Kirk Joseph Bertsche ,  Giorgio Asmerom ,  Miguel Gutierrez

IPC: H01J35/08 ,  A61B6/00 ,  A61N5/10

Abstract: Described herein is a medical linear accelerator including an accelerator target structure constructed of a material having a thickness of less than 0.2 radiation lengths, and an accelerator structure to receive an electromagnetic wave and generate an output therapy dose rate of electrons having a beam energy between 4-25 mega-electronvolts (MeV).

公开(公告)号：US10701789B2

公开(公告)日：2020-06-30

申请号：US15879323

申请日：2018-01-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sora Park ,  Yoon-Ho Song ,  Jin-Woo Jeong

IPC: H01J35/08 ,  H05G1/22 ,  H05G1/52 ,  H01J35/12 ,  H05G1/54

Abstract: Provided is a method for driving an X-ray source, which includes a cathode electrode, an electron source provided on the cathode electrode and configured to emit an electron beam, and an anode target including an electron beam irradiation surface with the electron beam irradiated thereto, the method including providing the electron beam in a plurality of main pulses, wherein each of the main pulses includes a plurality of short pulses having an idle time and a pulse time, and each of the idle time and the pulse time is shorter than a duration time of the main pulse, wherein applying the plurality of short pulses comprises irradiating the electron beam from the electron source towards the electron beam irradiation surface during the pulse time; and idling the electron beam during the idle time, wherein a duty cycle of the short pulse is 0.4 to 0.6, which is obtained by dividing the idle time by a sum of the pulse time and the idle time.

公开(公告)号：US10692685B2

公开(公告)日：2020-06-23

申请号：US15487236

申请日：2017-04-13

Applicant: General Electric Company

Inventor： Vance Scott Robinson ,  Yong Liang ,  Thomas Robert Raber ,  George Theodore Dalakos ,  Christoph Wild

IPC: H01J35/12 ,  H01J35/08

Abstract: The present disclosure relates to the production and use of a multi-layer X-ray source target. In certain implementations, layers of X-ray generating material may be interleaved with thermally conductive layers. To prevent delamination of the layers, various mechanical, chemical, and structural approaches are related, including approaches for reducing the internal stress associated with the deposited layers and for increasing binding strength between layers.

公开(公告)号：US20200163195A1

公开(公告)日：2020-05-21

申请号：US16749738

申请日：2020-01-22

Applicant: Moxtek, Inc.

Inventor： Ricky B. Steck ,  Brad Harris

IPC: H05G1/02 ,  H01J35/06 ,  H01J35/18 ,  H05G1/10 ,  H01J35/08

Abstract: In one embodiment, an x-ray tube 15 can be used closer to a sample. An angle A1 between an anode axis 02 and an electron-beam axis 01 can be ≥10° and ≤80° and an angle A2 between the anode axis 02 and an x-ray axis 03 can be ≥10° and ≤80°. In another embodiment, a cap 20 on an anode 12 can block x-rays emitted in undesired directions. The cap 20 can include an internal cavity 24, an electron-beam hole 21, an anode hole 22, and an x-ray hole 23. In another embodiment, an electrical connection between an x-ray tube 15 and a power supply 18 can be reliable and easy to manufacture. The anode 12 can include a hole 31 at an end of the anode 12 sized and shaped for insertion of an electrical connector 32.

公开(公告)号：US20200161075A1

公开(公告)日：2020-05-21

申请号：US16742733

申请日：2020-01-14

Applicant: SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.

Inventor： Peiyan CAO ,  Yurun LIU

IPC: H01J35/06 ,  H01J35/04 ,  H01J35/08 ,  A61B6/03 ,  A61B6/00

Abstract: Disclosed herein is an X-ray source, comprising: a cathode in a recess of a first substrate; a counter electrode on a sidewall of the recess, configured to cause field emission of electrons from the cathode; and a metal anode configured to receive the electrons emitted from the cathode and to emit X-ray from impact by the electrons on the metal anode.

公开(公告)号：US10658146B2

公开(公告)日：2020-05-19

申请号：US16536059

申请日：2019-08-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： Shuji Yamada ,  Tatsuya Suzuki ,  Takeo Tsukamoto ,  Yoichi Ikarashi ,  Tadayuki Yoshitake ,  Takao Ogura

IPC: H01J35/18 ,  H01J35/08 ,  H05G1/06

Abstract: A radiation emitting target, a radiation generating device, and a radiography system are provided in which adhesion between a target layer and a diamond substrate is improved and stable radiation emitting properties are exhibited. A transmission type target includes a target layer, a carbon-containing region including sp2 bonds, and a diamond substrate that supports the target layer. The carbon-containing region is positioned between the target layer and the diamond substrate.