公开(公告)号：US10283311B2

公开(公告)日：2019-05-07

申请号：US15230276

申请日：2016-08-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo Jeong ,  Yoon-Ho Song

IPC: H01J37/065 ,  H01J35/06 ,  H01J35/04 ,  H01J35/16

Abstract: Disclosed is an X-ray source, including: a cathode; an anode positioned on the cathode so as to face the cathode; emitters formed on the cathode; a gate electrode positioned between the cathode and the anode and including openings at positions corresponding to those of the emitters; an insulating spacer formed between the gate and the anode; and a coating layer formed on an internal wall of the insulating spacer, and including a material having a lower secondary electron emission coefficient than that of the insulating spacer.

公开(公告)号：US20190116653A1

公开(公告)日：2019-04-18

申请号：US16209639

申请日：2018-12-04

Applicant: Moxtek, Inc.

Inventor： Eric Miller ,  Thomas E. Blair

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

Abstract: Improved heat transfer from an x-ray tube can be accomplished with a heatsink surrounding at least part of an x-ray tube. The heatsink can be electrically connected to an anode of the x-ray tube and can be an electrical current path. The heatsink can include a plurality of protrusions extending radially outward from the x-ray tube and can be a single, integral substance extending from an inner-surface of the heatsink to a distal-end of the protrusions.

公开(公告)号：US20190115183A1

公开(公告)日：2019-04-18

申请号：US16158336

申请日：2018-10-12

Applicant: TOSHIBA ELECTRON TUBES & DEVICES CO., LTD.

Inventor： Tomonobu SAITO

IPC: H01J35/08 ,  H01J35/06 ,  H01J35/16

Abstract: According to one embodiment, a stationary anode X-ray tube includes a cathode, an anode, an anode hood, an X-ray transmissive window and a vacuum envelope. A target surface of the anode is an inclined surface disposed to be spaced further away from the cathode towards a first direction. An angle made with respect to a second direction as the first direction is pivoted clockwise or counter-clockwise is any degree but 0°.

公开(公告)号：US20190019647A1

公开(公告)日：2019-01-17

申请号：US15787273

申请日：2017-10-18

Applicant: SUNJE HI-TEK CO., LTD.

Inventor： Dong-Hoon LEE ,  Sang-Hyo KIM ,  Eun-Min KIM ,  Sang-Bong SEO ,  Dong-Gil JUNG ,  Sih-Wan HEO ,  Dongkyu SEOL

IPC: H01J35/14 ,  H01J35/18 ,  H01J35/06

Abstract: Disclosed is an X-ray tube for improving electron focusing, which allows thermoelectrons emitted from a filament to efficiently reach a target of an X-ray irradiation window. To achieve this, the X-ray tube includes: a thermionic emitter configured to emit thermoelectrons by application of a negative high voltage; a focusing tube configured to focus the thermoelectrons emitted from the thermionic emitter; an X-ray irradiation window configured to irradiate X-rays outside by the thermoelectrons bombarded on a target distributed on the X-ray irradiation window, to generate the X-rays after the thermoelectrons pass through the focusing tube; a tube part including both the thermionic emitter and the focusing tube; and a housing surrounding the tube part, wherein the focusing tube and the housing are configured to have a same potential such that movement directions of the thermoelectrons are directed to the X-ray irradiation window.

公开(公告)号：US10181390B2

公开(公告)日：2019-01-15

申请号：US15152992

申请日：2016-05-12

Applicant: Toshiba Electron Tubes & Devices Co., Ltd.

Inventor： Naoki Takahashi ,  Takashi Shimono ,  Hidero Anno

IPC: H01J1/18 ,  H01J5/26 ,  H01J19/48 ,  H01J29/90 ,  H01J35/16 ,  H05G1/10 ,  H01J19/66 ,  H01J5/22 ,  H01J19/60 ,  H01J29/92 ,  H01J35/06

Abstract: According to one embodiment, an X-ray tube includes a cathode including a filament, an anode target, and an envelope. The cathode includes a metal lead wire supporter which is exposed outside the envelope, which is configured as a part of the envelope, and to which a lead wire as a power supplier to the filament is attached such that the lead wire passes both inside and outside of the envelope, and a metal filament supporter fixed on the lead wire supporter, being in contact with the lead wire supporter, and supporting the filament.

公开(公告)号：US10181389B2

公开(公告)日：2019-01-15

申请号：US14660645

申请日：2015-03-17

Applicant: VAREX IMAGING CORPORATION

Inventor： Bradley D. Canfield ,  Colton B. Woodman

IPC: H05H1/10 ,  H05G1/52 ,  H01J35/06 ,  H01J35/14 ,  H01J35/30 ,  H05G1/10

Abstract: An X-ray tube can include: a cathode including an electron emitter that emits an electron beam; an anode configured to receive the electron beam; a first magnetic quadrupole between the cathode and the anode and having a first yoke with four first pole projections extending from the first yoke and oriented toward a central axis of the first yoke and each of the four first pole projections having a first quadrupole electromagnetic coil; a second magnetic quadrupole between the first magnetic quadrupole and the anode and having a second yoke with four second pole projections extending from the second yoke and oriented toward a central axis of the second yoke and each of the four second pole projections having a second quadrupole electromagnetic coil; and at least one steering coil collocated with a quadrupole on a pole projection.

公开(公告)号：US20180247787A1

公开(公告)日：2018-08-30

申请号：US15904820

申请日：2018-02-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo JEONG ,  Yoon-Ho SONG ,  Jun Tae KANG ,  Jae-Woo KIM

IPC: H01J35/14 ,  G21K1/02 ,  H05G1/52 ,  H01J35/06 ,  H01J35/16

CPC classification number: H01J35/14 ,  G21K1/02 ,  H01J35/045 ,  H01J35/06 ,  H01J35/16 ,  H01J2235/062 ,  H01J2235/16 ,  H05G1/52

Abstract: Provided is an X-ray source including a vacuum closed tube. The X-ray source includes a high voltage connection module, a tube module, and a magnetic lens system into which the tube module is inserted. The tube module includes a vacuum closed tube. The vacuum closed tube includes a cathode electrode provided at one end thereof, a nano-emitter on the cathode electrode, an anode electrode provided at the other end, and a first insulation spacer provided between the cathode electrode and the anode electrode. In addition, the vacuum closed tube includes a first conductive tube and a second conductive tube both provided between the cathode electrode and the anode electrode and separated from each other by the first insulation spacer, and a first collimator block covering an inner surface of the first insulation spacer and having a first opening.

公开(公告)号：US10014148B2

公开(公告)日：2018-07-03

申请号：US14904061

申请日：2015-08-19

Applicant: Nuctech Company Limited

Inventor： Huaping Tang ,  Zhiqiang Chen ,  Yuanjing Li ,  Yonggang Wang ,  Zhanfeng Qin

IPC: A61B6/03 ,  A61B6/04 ,  H01J37/26 ,  H01J35/06 ,  H01J35/14

CPC classification number: H01J35/065 ,  H01J3/021 ,  H01J35/14 ,  H01J2203/022 ,  H01J2203/0224 ,  H01J2203/0236 ,  H01J2235/062 ,  H01J2235/068 ,  H05G1/52

Abstract: The present disclosure is directed to an electron source and an X-ray source using the same. The electron source of the present invention comprises: at least two electron emission zones, each of which comprises a plurality of micro electron emission units, wherein the micro electron emission unit comprises: a base layer, an insulating layer on the base layer, a grid layer on the insulating layer, an opening in the grid layer, and an electron emitter that is fixed at the base layer and corresponds to a position of the opening, wherein the micro electron emission units in the same electron emission zone are electrically connected and simultaneously emit electrons or do not emit electrons at the same time, and wherein different electron emission zones are electrically partitioned.

公开(公告)号：US20180090293A1

公开(公告)日：2018-03-29

申请号：US15280701

申请日：2016-09-29

Applicant: General Electric Company

Inventor： Yong Liang ,  Vance Scott Robinson

IPC: H01J35/12 ,  H01J35/06 ,  H01J35/10

CPC classification number: H01J35/08 ,  H01J2235/084 ,  H01J2235/088 ,  H01J2235/1291

Abstract: The present disclosure relates to multi-layer X-ray sources having decreased hydrogen within the layer stack and/or tungsten carbide inter-layers between the primary layers of X-ray generating and thermally-conductive materials. The resulting multi-layer target structures allow increased X-ray production, which may facilitate faster scan times for inspection or examination procedures.

公开(公告)号：US09922793B2

公开(公告)日：2018-03-20

申请号：US14421831

申请日：2013-08-11

Applicant: NANOX IMAGING PLC

Inventor： Tetsuo Hori ,  Hitoshi Masuya ,  Hidenori Kenmotsu

IPC: H01J35/00 ,  H01J29/62 ,  H01J29/46 ,  H01J31/28 ,  H01J29/02 ,  H01J35/06

CPC classification number: H01J29/62 ,  H01J29/025 ,  H01J29/46 ,  H01J31/28 ,  H01J35/065

Abstract: An image capture device and an x-ray emitting device are introduced comprising an electron receiving construct and an electron emitting construct separated by a spacer. The electron receiving construct comprises a faceplate, an anode and an inward facing photoconductor. The electron emitting construct comprises: a backplate; a substrate; a cathode; a plurality of field emission type electron sources arranged in an array; a stratified resistive layer between the field emission type electron source and the cathode; a gate electrode; a focus structure and a gate electrode support structure configured to support the gate electrode at a required cathode-gate spacing from the cathode.