公开(公告)号：US2671867A

公开(公告)日：1954-03-09

申请号：US19744150

申请日：1950-11-24

Applicant: DUNLEE CORP

Inventor： ATLEE ZED J

IPC: H01J35/04

CPC classification number: H01J35/04

公开(公告)号：US2597817A

公开(公告)日：1952-05-20

申请号：US71335446

申请日：1946-11-30

Applicant: MAURICE POITTEVIN

Inventor： MAURICE POITTEVIN

IPC: H01J1/15 ,  H01J35/04 ,  H01J35/06

CPC classification number: H01J35/04 ,  H01J1/15 ,  H01J35/06

公开(公告)号：US2551798A

公开(公告)日：1951-05-08

申请号：US76036447

申请日：1947-07-11

Applicant: RCA CORP

Inventor： HANSELL CLARENCE W

IPC: H01J25/50 ,  H01J35/04

CPC classification number: H01J35/04 ,  H01J25/50

公开(公告)号：US2206558A

公开(公告)日：1940-07-02

申请号：US15278737

申请日：1937-07-09

Applicant: BENNETT WILLARD H

Inventor： BENNETT WILLARD H

IPC: H01J27/02 ,  H01J35/04 ,  H05H5/00

CPC classification number: H05H5/00 ,  H01J27/02 ,  H01J35/04

公开(公告)号：US1738959A

公开(公告)日：1929-12-10

申请号：US56054522

申请日：1922-05-13

Applicant: ARTHUR MUTSCHELLER

Inventor： ARTHUR MUTSCHELLER

IPC: H01J35/04

CPC classification number: H01J35/04

公开(公告)号：US1541484A

公开(公告)日：1925-06-09

申请号：US53469522

申请日：1922-02-07

Applicant: C H F MULLER RONTGENROHRENFABR

Inventor： WILHELM DAUMANN

IPC: H01J35/04

CPC classification number: H01J35/04

公开(公告)号：US11887746B2

公开(公告)日：2024-01-30

申请号：US17532507

申请日：2021-11-22

Applicant: Schlumberger Technology Corporation

Inventor： Luke T. Perkins ,  Christian Stoller ,  Peter Wraight

IPC: G21G4/02 ,  H05H3/06 ,  G01V5/10 ,  H01J35/04 ,  H01J35/14 ,  H01J35/00 ,  H05G1/10 ,  H05G1/02 ,  H05G1/00

CPC classification number: G21G4/02 ,  H05H3/06 ,  G01V5/10 ,  H01J35/00 ,  H01J35/04 ,  H01J35/14 ,  H01J2235/023 ,  H05G1/00 ,  H05G1/02 ,  H05G1/10

Abstract: Disclosed is a radiation logging tool, comprising a tool housing; a compact generator that produces radiation; a power supply coupled to the compact generator; and control circuitry. Embodiments of the compact generator comprise a generator vacuum tube comprising a source generating charged particles, and a target onto which the charged particles are directed; and a high voltage supply comprising a high voltage multiplier ladder located laterally adjacent to the generator vacuum tube. The high voltage supply applies a high voltage between the source and the target to accelerate the charged particles to a predetermined energy level. The compact generator also includes an electrical coupling between an output of the high voltage supply and the target of the generator vacuum tube to accommodate the collocated positions of the generator vacuum tube and the high voltage power supply.

公开(公告)号：US10014147B2

公开(公告)日：2018-07-03

申请号：US14469724

申请日：2014-08-27

Applicant: Futaba Corporation ,  Hamamatsu Photonics Kabushiki Kaisha

Inventor： Akira Matsumoto ,  Kiyoyuki Deguchi ,  Yuuichi Kogure ,  Kazuhito Nakamura ,  Tomoyuki Okada ,  Toru Fujita ,  Tatsuya Nakamura

IPC: H01J35/04 ,  H01J35/06 ,  H01J35/18 ,  H01J35/16

CPC classification number: H01J35/045 ,  H01J35/04 ,  H01J35/06 ,  H01J35/116 ,  H01J35/16 ,  H01J35/18 ,  H01J35/186

Abstract: Provided is an X-ray tube which can perform stable X-ray radiation under a desired condition in a radiation region extending in a predetermined direction. Included are a base plate having an opening portion and made of alloy 426, an X-ray transmission window made of titanium foil and arranged to close the opening portion of the base plate, a flat box-like vessel portion attached to the base plate and inside of which is in a vacuum state, an X-ray target provided at the opening portion in the vessel portion, and an electron source injecting electrons to the X-ray target in the vessel portion. The electron source includes a liner cathode, a first control electrode pulling out electrons from the cathode and a second control electrode restricting radiation range of the pulled-out electrons. At this time, X-rays emitted from the X-ray window spreads radially from opening shape of the opening portion.

公开(公告)号：US20180033579A1

公开(公告)日：2018-02-01

申请号：US15717364

申请日：2017-09-27

Applicant: NIKON METROLOGY NV

Inventor： Roger HADLAND

IPC: H01J35/02 ,  H01J29/48 ,  F16C35/04 ,  F16C33/76 ,  F16J15/16 ,  H05G1/12 ,  H02M7/10 ,  H01J35/10 ,  H01J35/04 ,  H01J35/16 ,  H02M1/32

CPC classification number: H01J35/025 ,  F16C33/768 ,  F16C35/042 ,  F16J15/16 ,  H01J29/48 ,  H01J35/04 ,  H01J35/06 ,  H01J35/101 ,  H01J35/106 ,  H01J35/108 ,  H01J35/16 ,  H01J37/065 ,  H01J2235/0236 ,  H01J2235/083 ,  H01J2235/086 ,  H01J2235/087 ,  H01J2235/1046 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/20 ,  H01J2237/2482 ,  H02M1/32 ,  H02M7/106 ,  H05G1/12

Abstract: Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode.

公开(公告)号：US09728367B2

公开(公告)日：2017-08-08

申请号：US14417546

申请日：2013-07-12

Applicant: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Hun Kuk Park ,  Je Hwang Ryu

IPC: H01J35/06 ,  H05G1/52 ,  H01J35/04

CPC classification number: H01J35/06 ,  H01J35/04 ,  H01J35/065 ,  H01J2201/30469 ,  H01J2235/062 ,  H05G1/52

Abstract: The present invention discloses a digital X-ray source. The digital X-ray source includes an X-ray generation unit that emits X-rays, wherein the X-ray generation unit includes a cathode electrode; an emitter formed above the cathode electrode; an anode electrode located above the emitter; a gate electrode located between the emitter and the anode electrode; first and second focusing electrodes located between the emitter and the anode electrode; and an electrode connecting unit configured to include one or more insulating tubes capable of fixing and adjusting the locations of the gate electrode and the first and second focusing electrodes on the cathode electrode, and also configured to individually insulate and connect the cathode electrode, the gate electrode and the first and second focusing electrodes from and with electric lines