WO2018212377A1 - Tube de rayons x - Google Patents

Tube de rayons x Download PDF

Info

Publication number
WO2018212377A1
WO2018212377A1 PCT/KR2017/005202 KR2017005202W WO2018212377A1 WO 2018212377 A1 WO2018212377 A1 WO 2018212377A1 KR 2017005202 W KR2017005202 W KR 2017005202W WO 2018212377 A1 WO2018212377 A1 WO 2018212377A1
Authority
WO
WIPO (PCT)
Prior art keywords
generating unit
grid
vacuum chamber
electron generating
ray tube
Prior art date
Application number
PCT/KR2017/005202
Other languages
English (en)
Korean (ko)
Inventor
윤중석
손유주
Original Assignee
주식회사 쎄크
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 쎄크 filed Critical 주식회사 쎄크
Priority to KR1020197032904A priority Critical patent/KR102268608B1/ko
Priority to PCT/KR2017/005202 priority patent/WO2018212377A1/fr
Publication of WO2018212377A1 publication Critical patent/WO2018212377A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • H01J35/147—Spot size control
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/045—Electrodes for controlling the current of the cathode ray, e.g. control grids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/16—Vessels; Containers; Shields associated therewith
    • H01J35/18—Windows
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/065—Field emission, photo emission or secondary emission cathodes

Definitions

  • the present invention relates to an x-ray tube, and more particularly, to an x-ray tube for adjusting the focal length by changing the position of the cathode and grid after sealing the x-ray tube.
  • X-ray tube is divided into a closed type supplied for single use and an open type for exchanging a filament or a target, which can be made arbitrarily, and a vacuum.
  • the X-ray tube has a cathode, an anode, and a target attached to the anode inside the vacuum chamber decompressed with high vacuum, and generates an X-ray by injecting electrons generated from the cathode into a target, and emits the generated X-ray through the X-ray window.
  • the focal size of the electrons colliding with the target should be small.
  • the focal length must be adjusted to reduce the focal size.
  • an object of the present invention is to provide an X-ray tube after sealing the X-ray tube, to adjust the focal length to prevent errors due to the bonding process and deformation due to heat.
  • a vacuum chamber the electron generating unit is connected and sealed to the vacuum chamber and the internal space, the anode is located inside the vacuum chamber, the target is installed at one end, and located inside the electron generating unit, And a cathode for emitting electrons to the target, and a focal length adjusting unit disposed in the electron generating unit and adjusting the focal size by moving the electron generating unit.
  • the focal length adjusting unit may include a bellows member disposed in the electron generating unit, and the bellows member may contact one end of the vacuum chamber.
  • the focal length adjusting unit may include a control pin which is fastened to a fastening groove formed at one end of the vacuum chamber and moves along the fastening groove toward the target to compress the bellows member.
  • the control pin may be rotatably coupled to the electron generating unit.
  • the fastening groove is a screw groove is formed, the adjusting pin is formed with a screw line corresponding to the screw groove, it is possible to adjust the compression of the bellows by the rotation of the adjusting pin.
  • the bellows member may be a metal material.
  • the bellows member may be installed on an inner surface of the electron generating unit.
  • the electron generating unit the grid for controlling the amount of electrons emitted from the cathode; And a cylindrical grid cap focusing electrons passing through the grid to the target and including a window through which the electrons pass.
  • the electron generator may include an electrode part electrically connected to the grid and the cathode and protruding outside the electron generator.
  • the focal length adjusting part may include a bellows member surrounding a part of the electrode part and a control pin installed at an end of the electrode part to adjust a length of the electrode part.
  • the focal size of the electrons reaching the target may be determined according to the size of the window of the grid.
  • the window may be rectangular.
  • the distance between the target and the grid may be adjusted by the focal length adjusting unit.
  • the focal length may be adjusted by moving the electron generating unit by using the focal length adjusting device, thereby preventing the error due to the bonding or heat caused by the sealing process.
  • FIG. 1 is a perspective view showing an x-ray tube according to an embodiment of the present invention.
  • Figure 2 is an exploded perspective view showing an x-ray tube according to an embodiment of the present invention.
  • Figure 3 is a cross-sectional view showing an x-ray tube according to an embodiment of the present invention.
  • FIG. 4 is an enlarged view illustrating a portion A shown in FIG. 3.
  • FIG. 5 is a diagram illustrating an electron generating unit illustrated in FIG. 3.
  • FIG. 6 is a cross-sectional view of an x-ray tube according to another embodiment of the present invention.
  • FIG. 7 is a diagram illustrating an electron generating unit illustrated in FIG. 6.
  • FIG. 8 is a diagram illustrating the grid cap shown in FIG. 5.
  • first may modify various components in any order and / or importance, and may distinguish one component from another. Used only and do not limit the components.
  • the first user device and the second user device may represent different user devices regardless of the order or importance.
  • the first component may be called a second component, and similarly, the second component may be renamed to the first component.
  • FIG. 1 is a perspective view showing an x-ray tube according to an embodiment of the present invention
  • Figure 2 is an exploded perspective view showing an x-ray tube according to an embodiment of the present invention.
  • the X-ray tube 1 includes an electron generator 100 and a vacuum chamber 200.
  • the electron generator 100 and the vacuum chamber 200 may include a cathode 130 (see FIG. 2) and an anode 210 (see FIG. 2).
  • the electron generating unit 100 may include a plurality of electrode units 120, and the plurality of electrode units 120 may protrude out of the electron generating unit 100 to receive a current.
  • the electron generating unit 100 and the vacuum chamber 200 are vacuumed.
  • the current is supplied to the cathode 130 by the current supplied through the electrode unit 120, and the cathode 130 emits electrons.
  • the adjustment pin 155 may adjust the distance between the electron generating unit 100 and the vacuum chamber 200 to adjust the focal length for focusing the electrons emitted from the cathode 130 to the anode 210.
  • the electron generating unit 100 may include an electrode unit 120, a cathode 130, and a bellows member 150.
  • the electrode unit 120 is inserted into and fixed to the opening 126 formed in the electron generating unit 100.
  • the opening 126 is formed in the insulator 125, and the electrode part 120 is cut off from the case 160 of the electron generating unit 100 by the insulator 125.
  • the electron generating unit 100 may be formed of a metal material, and thus, it is necessary to block the energization between the electrode unit 120 and the case 160 of the electron generating unit 100.
  • the electrode part 120 includes a pair of first electrode parts 121 connected to the cathode 130 and a plurality of second electrode parts 122 connected to the grid 173.
  • first electrode part 121 applies a current to the filament of the cathode 130.
  • the cathode 130 generates electrons by the applied current.
  • the second electrode part 122 forms an electric field by flowing an electric current through the grid 173, and electrons are emitted into the internal space 172 of the grid cap 170. May be adjusted to face the target 220 of the anode 210 (see FIG. 3).
  • the bellows member 150 and the adjusting pin 155 serve to adjust the position of the electron generating unit 100 to serve as a focal length adjusting unit for adjusting the focal length.
  • the bellows member 150 is installed at a stepped portion formed inside of the electron generating unit 100 to be described later, and a protrusion 226 protruding from one end 227 of the cylinder 230 extending from the side of the vacuum chamber 200. Is installed on. Bellows member 150 is wrinkled is formed, it can be compressed and tensioned. Compression and tension of the bellows member 150 may control the gap between the vacuum chamber 200 and the electron generating unit 100.
  • the adjusting pin 155 is fastened to the fastening groove 225 of the vacuum chamber 200 by passing through the hole 110 of the electron generating unit 100. Although the adjusting pin 155 passes through the hole 110, the movement in the longitudinal direction in the electron generating unit 100 is restricted, there is no movement along the longitudinal direction of the electron generating unit 100, and the fastening groove 225 is closed. Can be moved longitudinally. This adjusts the distance between the electron generating unit 100 and the vacuum chamber 200.
  • the vacuum chamber 200 includes an anode 210 therein.
  • a high voltage is applied to the anode 210 to accelerate the electrons emitted from the cathode 130, so that the electrons collide with the target 220 disposed inside the anode 210.
  • Electrons emitted from the cathode 130 are directed to the anode 21 through the grid 173 and the grid cap 170 disposed inside the cylinder 230, and the electrons are moved to the electron opening 215 formed in the anode 210. It collides with the target 220 through. Electrons impinging on the target 220 are emitted to the X-ray transmission window 250 through the X-ray passing opening 216.
  • FIG. 3 is a cross-sectional view illustrating an X-ray tube according to an exemplary embodiment of the present invention
  • FIG. 4 is an enlarged view illustrating a portion A shown in FIG. 3
  • FIG. 5 is a diagram illustrating the electron generating unit illustrated in FIG. 3.
  • the cathode 130, the grid 173, and the grid cap 170 of the electron generating unit 100 are disposed inside the cylinder 230 of the vacuum chamber 200, and electron generation is performed.
  • the bellows member 150 is disposed between the part 100 and the vacuum chamber 200.
  • the case 160 and the vacuum chamber 200 are formed of a vacuum inside, and are made of a material having sufficient rigidity to withstand the pressure difference between the inside and the outside.
  • the case 160 and the vacuum chamber 200 may be made of a metal material. However, the case 160 and the vacuum chamber 200 may be formed of a metal material.
  • the bellows member 150 is wrinkled is formed on the outer surface to be compressed and tensioned.
  • the electron generating unit 100 moves toward the vacuum chamber 200, the cathode 130, the grid 173, and the grid cap 170 move toward the anode 210.
  • the bellows member 150 has been described as being formed on the inner surface of the case 160 in the drawings of the present invention, the present invention is not limited thereto, and the bellows member 150 may be disposed outside or sealed inside the case 160 and may be sealed. It may be sealed in contact with the outer surface. That is, the stepped portion may be formed on the outer surface of the case 160 of the electron generating unit 100, and the stepped portion or the protrusion may be formed on the outer surface of the vacuum chamber 200. Even when the bellows member 150 is coupled to the stepped portion or the protrusion of the case 160 and the vacuum chamber 200, the distance between the electron generator 100 and the vacuum chamber 200 may be adjusted. In addition, the bellows member 150 may be installed in the second electrode part 122, which will be described later with reference to FIGS. 6 and 7.
  • An opening formed in the grid 173 controls the amount of electrons emitted from the cathode 130 and serves to guide the electrons to the grid cap 170.
  • An insulating member 175 is installed to prevent the grid 173 and the grid cap 170 from energizing. Through this, the cathode 130 and the grid 173 has a negative potential, the potential of the grid cap is maintained at 0V. Due to the potential difference between grid 173 and grid cap 170, electrons emitted from cathode 130 are first accelerated at grid cap 170 through grid 173.
  • the grid cap 170 and the grid 173 are located inside the cylinder 230, and the moving direction is guided by the cylinder 230.
  • the cathode 130 and the grid 173 are electrically connected by the first and second electrode portions 121 and 122, and are also physically fixed.
  • the first and second electrode parts 121 and 122 are formed of a rod having a length, and one end of the first and second electrode parts 121 and 122 protrudes out of the case 160 of the electron generating part 100. It is fixed to the case.
  • the first and second electrode parts 121 and 122 pass through the opening 126 formed of the insulator 125 and are fixed to the case 160 in order to prevent power supply to the case 160.
  • the other end of the first electrode part 121 is connected to the filament by the filament of the cathode 130 and the coupling member 135 inside the case 160 of the electron generating unit 100.
  • the cathode 130 moves in response to the movement of the electron generating unit 100.
  • the other end of the second electrode part 122 is coupled to one surface of the grid cap 170, and the grid cap 170 moves in response to the movement of the electron generator 100.
  • the anode 210 includes a target 220, an electron transfer opening 215, and an x-ray passing opening 216. Electrons emitted from the cathode 130 are focused on the target 220 through the electron moving opening 215 through the window 171.
  • the target 220 is disposed with an inclination, and the X-rays generated by the target 220 travel outside the anode 210 through the X-ray passing opening 216.
  • the filament of the cathode 130 may be formed of tungsten with good thermal properties. According to the thermal properties of tungsten, when a current flows through the filament, the filament is heated to a temperature where electrons can be generated. At this time, if the voltage applied to the filament is changed, the filament current changes and electrons are emitted.
  • the adjustment pin 155 passes through the hole 110 formed in the case 160 and is rotatably coupled to the hole 110.
  • One end of the adjustment pin 155 is inserted into the fastening groove 225 formed in the cylinder 230 of the vacuum chamber 200.
  • Both ends of the bellows member 150 are sealed and coupled to the case 160 of the electron generating unit 100 and the cylinder 230 of the vacuum chamber 200, so that the adjustment pin 155 is provided to the end of the fastening groove 225.
  • the distance between the electron generating unit 100 and the vacuum chamber 200 is closest.
  • the shorter the distance that the adjustment pin 155 is inserted into the fastening groove 225 the farther the distance between the electron generating unit 100 and the vacuum chamber 200.
  • the bellows member 150 is preferably formed of a metal to withstand the internal space formed by the vacuum. However, if the material has a rigidity that can withstand vacuum, the bellows member 150 may not be limited to metal.
  • the adjusting pin 155 may have a screw line for coupling with the fastening groove 225 at one end, and the fastening groove may have a screw groove corresponding to the screw line of the adjusting pin 155.
  • the adjusting pin 155 having a screw thread is rotatably coupled to the hole 110, by the rotation of the adjusting pin 155, the adjusting pin 155 is inserted into the fastening groove 225 having the screw groove. It can be adjusted, and through this, it is possible to adjust the moving distance of the electron generating unit 100, the cathode 130, the grid 173 and the grid cap 170.
  • the adjusting pin 155 has a screw line and the fastening groove 225 has a screw groove, it is not limited thereto.
  • the adjusting pin 155 and the fastening groove 225 may have a groove and a protrusion to snap to each other.
  • the locking groove may be formed in the longitudinal direction of the fastening groove 225. In this case, when the adjustment pin 155 moves in the longitudinal direction, the projection of the adjustment pin 155 can be caught and fixed in the locking groove 225, the inner locking groove, if adjustment is necessary, the adjustment pin 155 again Can be adjusted by moving in the longitudinal direction.
  • FIG. 6 is a cross-sectional view of an X-ray tube according to another exemplary embodiment of the present invention
  • FIG. 7 is a diagram illustrating an electron generating unit illustrated in FIG. 6.
  • the plurality of bellows members 151 are installed in the first and second electrode portions 121 and 122.
  • the installation position of the bellows member 151 and the structure other than the first and second electrode portions 121 and 122 have the same configuration as the X-ray tube of FIGS. 2 to 5.
  • the bellows member 150 of the focal length adjusting unit may be disposed in the electron generating unit 100.
  • the bellows member 151 provided in the electrode part 120 will be described based on the second electrode part 122 connected to the grid 173.
  • the bellows member 151 is installed between the outer tube 122a of the second electrode portion 122 and the connection rod 122b.
  • the adjusting pin 156 is inserted into the outer tube 122a.
  • the adjusting pin 156 and the connecting rod 122b may be integrally formed.
  • the bellows member 151 is compressed, and the case 160 and the vacuum of the electron generating unit 100 are vacuumed.
  • the lengths of the first and second electrode parts 121 and 122 disposed inside the chamber 200 are shortened. Through this, the cathode 130, the grid 173, and the grid cap 170 may be moved away from the target.
  • the bellows member 150 is sealed between the electron generating unit 100 and the vacuum chamber 200, or the bellows member 151 surrounds a part of the electrode unit 120.
  • the present invention is not limited thereto, and the bellows members 150 and 151 may be installed where compression or tension is required by installing a portion for adjusting the focal length.
  • FIG. 8 is a diagram illustrating the grid cap shown in FIG. 5.
  • the grid cap 170 has a cup shape.
  • the grid cap 170 is formed of a metal material and receives a current from the second electrode part 122.
  • the grid cap 170 has an empty space inside, and a window 171 is formed in the direction toward the anode 210. Electrons emitted into the grid cap 170 are transferred to the anode 210 through the window 171.
  • the grid cap 170 receives a current from the second electrode unit 122 to form an electric field therein, thereby causing electrons to travel to the target 220, and to focus the electrons.
  • the grid 173 may be composed of a focusing coil and a deflection coil therein.
  • the grid cap 170 surrounding the electron path toward the anode 210 prevents the electrons from dispersing while the electrons move and forms a magnetic field for focusing the electrons.
  • the focal size at which electrons are focused on the target 220 is small, and the closer to the circle, the higher the sharpness. What affects the focal size is affected by the size of the window 171 of the grid cap 170 and the distance between the window 171 and the target 220. As the size of the window 171 increases, the distance between the target 220 and the grid 173, the grid cap 170, and the window 171 should be increased to reduce the focus size. Therefore, the focal length should be set differently according to the size of the window 171. Even if the cathode 130, the grid cap 170, and the grid 173 are installed at the focal length, additional errors occur due to the bonding error and deformation due to heat during the sealing process. Since the sharpness may deteriorate, it is necessary to adjust the focal length after sealing.
  • the shape of the vacuum chamber 200 is not perfectly symmetrical and the target 220 disposed on the anode 210 is inclined, when the window 171 is formed in a square shape, the electrons collide with the target 220.
  • the shape is not circular. Therefore, in order to adjust electrons colliding with the target 220 to a certain density and to form a circle close to a circular shape, a rectangular window 171 is required. Therefore, the aspect ratio of the window 171 is determined so that the focal point of the electrons colliding with the target 220 is circular.
  • the window 171 is formed in a rectangular shape so that the shape of the focus is circular, and the electron generating unit 100 and the vacuum chamber 200 are formed by using the focal length adjusting member formed of the bellows member 150 and the adjusting pin 155. You can increase the sharpness of the X-ray device by adjusting the distance between the
  • the anode 210 including the target 220 is installed in the vacuum chamber 200.
  • the bellows member 150 may be installed on an inner surface of the case 160 of the electron generating unit 100.
  • the bellows member 150 is coupled to the stepped portion 111 inside the case 160 and then sealed.
  • the electrode unit 120 is installed through the opening 126 of the insulator 125 formed on the outer surface of the case 160 of the electron generating unit 100.
  • the cathode 130 coupled to one end of the first electrode portion 121 and the grid 173 coupled to one end of the second electrode portion 122 are also fixed to the electron generator 100. Thereafter, the adjustment pin 155 is rotatably installed through the hole 110 formed in the case 160.
  • the cylinder 230 extending from the side of the vacuum chamber 200 is brought into contact with the case 160 of the electron generating unit 100.
  • the grid cap 170, the grid 173, and the cathode 130 are inserted into the cylinder 230.
  • the bellows member 150 installed in the electron generating unit 100 is disposed in contact with the protrusion 226 of the cylinder 230, and then sealed. Thereafter, the adjustment pin 155 is inserted into the fastening groove 225 to be combined to produce an X-ray tube.
  • X-ray tubes are manufactured with focal length at the time of assembly.
  • the X-ray tube 1 is commissioned.
  • the adjusting pin 155 is adjusted to move the grid 173, the grid cap 170, and the cathode 130 into the cylinder 230, or the distance from the target 220 is increased. Finally, the X-ray tube 1 is manufactured.
  • the bellows member 150 includes the case 160 of the electron generating unit 100 and the cylinder 230 of the vacuum chamber 200. ), The case 160 and the cylinder 230 are sealed.
  • the bellows member 151 and the adjusting pin 156 are inserted into the opening 126 of the insulating member 125 attached to the case 160 in the form of being installed in the electrode unit 120.
  • the adjusting pin 156 may be pulled or pushed to adjust the inner length of the case 160 of the first and second electrode parts 121 and 122, and the outer tube 122a and the adjusting pin 156 may be screwed to each other.
  • the inner length of the case 160 of the first and second electrode parts 121 and 122 may be adjusted by the rotation of the adjustment pin 156.
  • the electrode unit 120 of the X-ray tube 1 receives a current.
  • the current applied to the second electrode portion 122 flows along the second electrode portion 122 to the grid 173.
  • an electric field is formed due to the applied current.
  • the grid 173 and the grid cap 170 are insulated by the insulating member 175, so that a potential difference is generated.
  • the current applied to the first electrode part 121 is transferred to the cathode 130.
  • the cathode 130 is formed of a filament, and the electron generator 100 and the interior of the vacuum chamber 200 are decompressed with high vacuum.
  • the filament of the cathode 130 is heated by the current, and heated to generate hot electrons.
  • the emitted electrons are primarily accelerated.
  • a high voltage is applied to the anode 210 included in the vacuum chamber 200 to further accelerate the electrons, the moving speed of the electrons generated from the cathode 130 is increased.
  • an X-ray is generated.
  • the grid 173 When a current is applied to the grid 173, it serves as an electrostatic lens that focuses the emitted electrons to one point of the target. That is, the grid 173 may focus electrons on the target with a small focal size in order to increase the sharpness of the transmitted image of the X-ray.
  • the grid 173, the grid cap 170, and the cathode 130 are moved back and forth in the cylinder 230 to achieve an optimal focal length and then installed in an X-ray imaging apparatus.
  • the X-ray tube may adjust the focal length after sealing the electron generating unit 100 and the vacuum chamber 200 constituting the X-ray tube. Therefore, when the distance is adjusted using the adjustment pins 155 and 156 after sealing the error of the focal length generated during the sealing process, the electron generating unit 100 and the vacuum chamber are deformed by the deformation of the bellows members 150 and 151. The distance of 200 can be adjusted. As a result, the sharpness of the X-ray apparatus in which the X-ray tube 1 is installed may be improved by adjusting the focal size at which electrons emitted from the cathode 130 are focused on the target 220 through the grid 173.

Abstract

L'invention concerne un tube de rayons X. Le tube de rayons X selon l'invention comprend : une chambre à vide; une unité de génération d'électrons connectée à la chambre à vide; une anode située à l'intérieur de la chambre à vide et ayant une cible montée sur une extrémité de celle-ci; une cathode qui est située à l'intérieur de l'unité de génération d'électrons et émettant des électrons vers la cible; et une unité d'ajustement de distance focale qui est située entre la chambre à vide et l'unité de génération d'électrons et scellée avec celle-ci et déplaçant l'unité de génération d'électrons de façon à ajuster l'objectif.
PCT/KR2017/005202 2017-05-19 2017-05-19 Tube de rayons x WO2018212377A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020197032904A KR102268608B1 (ko) 2017-05-19 2017-05-19 엑스레이 튜브
PCT/KR2017/005202 WO2018212377A1 (fr) 2017-05-19 2017-05-19 Tube de rayons x

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2017/005202 WO2018212377A1 (fr) 2017-05-19 2017-05-19 Tube de rayons x

Publications (1)

Publication Number Publication Date
WO2018212377A1 true WO2018212377A1 (fr) 2018-11-22

Family

ID=64274030

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/005202 WO2018212377A1 (fr) 2017-05-19 2017-05-19 Tube de rayons x

Country Status (2)

Country Link
KR (1) KR102268608B1 (fr)
WO (1) WO2018212377A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210017127A (ko) * 2019-08-07 2021-02-17 (주) 브이에스아이 대면적 엑스선 발생장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090020752A (ko) * 2007-08-24 2009-02-27 정원정밀공업 주식회사 Ｌｅｄ 조명을 이용한 진단엑스선 조사중심표시광 발생장치
US20110182404A1 (en) * 2005-01-26 2011-07-28 Norbert Haunschild Collimator with an adjustable focal length
KR20130141789A (ko) * 2012-06-18 2013-12-27 한국전자통신연구원 엑스선원 및 이를 이용한 엑스선 초점 조절 방법
KR20140092437A (ko) * 2012-12-27 2014-07-24 삼성전자주식회사 엑스선 영상 장치 및 엑스선 영상 장치의 제어 방법
KR101731594B1 (ko) * 2015-08-31 2017-05-02 주식회사바텍 정렬성이 향상된 초소형 엑스선관 및 이를 위한 정렬 장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008147096A (ja) * 2006-12-13 2008-06-26 Toshiba Corp Ｘ線イメージ管のフォーカス調整方法およびその装置
US8716925B2 (en) * 2011-08-09 2014-05-06 L-3 Communications Corporation Adjustable perveance electron gun header

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110182404A1 (en) * 2005-01-26 2011-07-28 Norbert Haunschild Collimator with an adjustable focal length
KR20090020752A (ko) * 2007-08-24 2009-02-27 정원정밀공업 주식회사 Ｌｅｄ 조명을 이용한 진단엑스선 조사중심표시광 발생장치
KR20130141789A (ko) * 2012-06-18 2013-12-27 한국전자통신연구원 엑스선원 및 이를 이용한 엑스선 초점 조절 방법
KR20140092437A (ko) * 2012-12-27 2014-07-24 삼성전자주식회사 엑스선 영상 장치 및 엑스선 영상 장치의 제어 방법
KR101731594B1 (ko) * 2015-08-31 2017-05-02 주식회사바텍 정렬성이 향상된 초소형 엑스선관 및 이를 위한 정렬 장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210017127A (ko) * 2019-08-07 2021-02-17 (주) 브이에스아이 대면적 엑스선 발생장치
KR102409459B1 (ko) * 2019-08-07 2022-06-15 (주) 브이에스아이 대면적 엑스선 발생장치

Also Published As

Publication number Publication date
KR20190133770A (ko) 2019-12-03
KR102268608B1 (ko) 2021-06-28

Similar Documents

Publication Publication Date Title
TW580721B (en) Device for generating X-ray
WO2019013381A1 (fr) Tube à rayons x permettant d'améliorer la concentration d'électrons
GB2293686A (en) X-ray tube with annular vacuum housing
KR20160082970A (ko) X선장치 및 이를 구비한 ct장비
WO2018212377A1 (fr) Tube de rayons x
WO2013025080A1 (fr) Source de rayons x ayant des fonctions de refroidissement et de protection
WO2019022282A1 (fr) Tube à rayons x cylindrique et son procédé de fabrication
WO2013042810A1 (fr) Appareil comportant de multiples cibles et un faisceau multi-électrons pour génération de rayons x
KR100906148B1 (ko) 탄소나노튜브 전계방출원을 이용한 투과형 마이크로 포커스엑스선관
KR100587619B1 (ko) 비파괴 검사장치
US5387843A (en) Ion source having plasma chamber, an electron source, and a plasma power supply
US5235188A (en) Charged particle beam device
US2879422A (en) Electrostatic writing tube
CN100355323C (zh) X射线管调整装置、x射线管调整系统及x射线管调整方法
US5059859A (en) Charged particle beam generating apparatus of multi-stage acceleration type
KR100599702B1 (ko) 음극선관의 컨버젼스 드리프트 보정 장치
WO2020111820A1 (fr) Petit tube à rayons x ayant un extracteur
WO2024038953A1 (fr) Générateur de rayons x de type fermé facile à assembler avec surface cible parallèle à une fenêtre de sortie
US4855638A (en) Camera tube system and electron gun therefor
WO2014073810A1 (fr) Ionisateur optique
US6888299B2 (en) Electron gun for cathode ray tube having SVM coil and cathode ray tube using the electron gun
WO2019225814A1 (fr) Tube à rayons x réfléchissant
WO2023080693A1 (fr) Source de rayons x
WO2019027072A1 (fr) Tube à rayons x portable
JP2020043023A (ja) Ｘ線発生装置、ｘ線装置及びｘ線発生方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17910362

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20197032904

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17910362

Country of ref document: EP

Kind code of ref document: A1