WO2020136911A1 - X線発生管、x線発生装置およびx線撮像装置 - Google Patents
X線発生管、x線発生装置およびx線撮像装置 Download PDFInfo
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- WO2020136911A1 WO2020136911A1 PCT/JP2018/048607 JP2018048607W WO2020136911A1 WO 2020136911 A1 WO2020136911 A1 WO 2020136911A1 JP 2018048607 W JP2018048607 W JP 2018048607W WO 2020136911 A1 WO2020136911 A1 WO 2020136911A1
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- ray generation
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- 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
-
- 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
- H01J35/165—Vessels; Containers; Shields associated therewith joining connectors to the tube
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- 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
-
- 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
- H01J35/32—Tubes wherein the X-rays are produced at or near the end of the tube or a part thereof which tube or part has a small cross-section to facilitate introduction into a small hole or cavity
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/02—Constructional details
- H05G1/04—Mounting the X-ray tube within a closed housing
- H05G1/06—X-ray tube and at least part of the power supply apparatus being mounted within the same housing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- 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
- H01J35/112—Non-rotating anodes
- H01J35/116—Transmissive anodes
Definitions
- the present invention relates to an X-ray generation tube, an X-ray generation device, and an X-ray imaging device.
- Patent Document 1 describes an X-ray generating tube having an insulating tube, a cathode, an anode, and an inner peripheral anode layer.
- the insulating tube, the cathode and the anode constitute an envelope defining an inner space, and the inner peripheral anode layer extends from the anode along the inner surface of the insulating tube. Since the inner peripheral anode layer is electrically connected to the anode, it suppresses the charging of the insulating tube.
- the thickness of the insulation tube in order to reduce the weight of the X-ray generation tube.
- the strength of the insulating tube or the X-ray generating tube may be reduced.
- the withstand voltage of the insulating tube is lowered, and the electric field strength tends to be strong. May occur and a leak may occur through the through hole formed thereby.
- the present invention aims to provide an advantageous technique for reducing the weight of the X-ray generation tube while suppressing the discharge that penetrates the insulation tube and ensuring the strength of the insulation tube.
- a first aspect of the present invention relates to an X-ray generation tube, wherein the X-ray generation tube has an insulating tube having a first opening end and a second opening end, and an electron emission source.
- a cathode arranged to close the first opening end, and a target for generating X-rays when electrons from the electron emission source collide with each other, so as to close the second opening end of the insulating tube.
- a tubular conductive member extending from the anode in the inner space of the insulating tube, the insulating tube being located at a position separated from the first opening end and separated from the second opening end.
- a tubular rib the tubular rib being arranged in the radial direction when viewed from the end of the tubular conductive member on the cathode side.
- a second aspect of the present invention relates to an X-ray generating tube, wherein the X-ray generating tube has an insulating tube having a first opening end and a second opening end, and an electron emission source.
- a cathode arranged to close the first opening end, and a target for generating X-rays when electrons from the electron emission source collide with each other, so as to close the second opening end of the insulating tube.
- a tubular conductive member extending from the anode in the inner space of the insulating tube, and arranged to cover the outside of the insulating tube, a sheet resistance value smaller than the sheet resistance value of the insulating tube.
- a third aspect of the present invention relates to an X-ray generation device, wherein the X-ray generation device includes an X-ray generation tube according to the first or second side surface, and a drive circuit that drives the X-ray generation tube. , Is provided.
- a fourth aspect of the present invention includes the X-ray generator according to the third aspect, and an X-ray detector that detects X-rays emitted from the X-ray generator and transmitted through an object.
- an advantageous technique is provided for reducing the weight of the X-ray generating tube while suppressing the discharge that penetrates the insulating tube and ensuring the strength of the insulating tube.
- Sectional drawing which shows typically the structure of the X-ray generation tube of 1st Embodiment of this invention. Sectional drawing which shows typically the structure of the X-ray generation tube of 2nd Embodiment of this invention. Sectional drawing which shows typically the structure of the X-ray generation tube of 3rd Embodiment of this invention. Sectional drawing which shows typically the structure of the X-ray generation tube of 4th Embodiment of this invention. Sectional drawing which shows typically the structure of the X-ray generation tube of 5th Embodiment of this invention. Sectional drawing which shows typically the structure of the X-ray generation tube of 6th Embodiment of this invention. Sectional drawing which shows typically the structure of the X-ray generation tube of 7th Embodiment of this invention.
- Sectional drawing which shows typically the structure of the X-ray generation tube of 8th Embodiment of this invention.
- Sectional drawing which shows typically the structure of the X-ray generation tube of 9th Embodiment of this invention.
- Sectional drawing which shows typically the structure of the X-ray generation tube of 10th Embodiment of this invention.
- the figure which shows the simulation result which shows the electric potential in an X-ray generation tube.
- the figure which shows the simulation result which shows the electric potential in an X-ray generation tube.
- FIG. 1 schematically shows the configuration of the X-ray generation tube 1 according to the first embodiment of the present invention.
- the X-ray generation tube 1 of the first embodiment may include an insulating tube 10, a cathode 20, an anode 30, and a tubular conductive member 50.
- the insulating tube 10 has a first opening end OP1 and a second opening end OP2.
- the insulating tube 10 is made of an insulating material (for example, ceramic or glass) and has a tubular shape extending in the axial direction AD.
- the tubular shape is a shape that forms a closed figure in a cross section orthogonal to the axial direction AD, and is, for example, a cylindrical shape.
- the concept of the tubular shape may include shapes having different cross-sectional areas at different positions in the axial direction AD.
- the cathode 20 is arranged so as to close the first open end OP1 of the insulating tube 10.
- the cathode 20 has an electron emission source 22 that emits electrons.
- the electron emission source 22 can include, for example, a filament, a focusing electrode that focuses electrons emitted from the filament, and the like.
- a potential of ⁇ 100 kV with respect to the anode 30 can be applied to the cathode 20, for example.
- the anode 30 is arranged so as to close the second opening end OP2 of the insulating tube 10.
- the anode 30 may include a target 34, a target holding plate 33 that holds the target 34, and an electrode 32 that holds the target holding portion 33.
- the electrode 32 is electrically connected to the target 34 and gives a potential to the target 34.
- the target 34 generates X-rays when electrons from the electron emission source 22 collide with the target 34.
- the generated X-rays pass through the target holding plate 33 and are radiated to the outside of the X-ray generation tube 1.
- the anode 30 can be maintained at, for example, the ground potential, but may be maintained at another potential.
- the target 34 may be made of a material having a high melting point and a high X-ray generation efficiency, such as tungsten, tantalum, or molybdenum.
- the target holding plate 33 can be made of, for example, a material that transmits X-rays, such as beryllium or diamond.
- the tubular conductive member 50 is arranged so as to extend from the anode 30 in the inner space of the insulating tube 10.
- the tubular conductive member 50 has a tubular shape extending in the axial direction AD.
- the tubular conductive member 50 is electrically connected to the anode 30.
- the tubular conductive member 50 is separated from the cathode 20.
- the tubular conductive member 50 may be arranged so as to surround at least a part of the trajectory of the electrons emitted from the electron emission source 22 (the path between the electron emission source 22 and the target 34).
- the tubular conductive member 50 can function to reduce the influence of the charging of the insulating tube 10 on the trajectory of electrons emitted from the electron emission source 22.
- the tubular conductive member 50 may be arranged, for example, so as to come into contact with the inner surface of the insulating tube 10, but may be arranged apart from the inner surface of the insulating tube 10.
- the tubular conductive member 50 may be configured integrally with the anode 30, but may be configured separately from the anode 30 and may be bonded or fixed to the anode 30.
- the tubular conductive member 50 is formed on the inner surface of the insulating tube 10 by a vapor deposition method such as CVD (Chemical Vapor Deposition), PVD (Physical Vapor Deposition), or a plating method or a coating method, for example. It can be a membrane.
- the tubular conductive member 50 may be formed separately from the insulating tube 10 and then inserted into the insulating tube 10.
- the insulating tube 10 may include a tubular rib 12 at a position separated from the first opening end OP1 and separated from the second opening end OP2.
- the thickness of the portion of the insulating tube 10 where the tubular ribs 12 are arranged is larger than the thickness of other portions of the insulating tube 10.
- the tubular rib 12 improves the strength of the insulating tube 10. Therefore, the provision of the tubular ribs 12 is advantageous in reducing the thickness of the portion of the insulating tube 10 other than the portion where the tubular ribs 12 are provided, which contributes to the weight reduction of the X-ray generation tube 1. sell.
- the tubular rib 12 may be arranged so as to face the inner space of the insulating tube 10.
- the tubular rib 12 may be arranged in the radial direction RD when viewed from the end 52 of the tubular conductive member 50 on the cathode 20 side. Since the end portion 52 of the tubular conductive member 50 is a portion where the electric field strength is likely to be high, providing the tubular rib 12 in the radial direction RD of the end portion 52 suppresses the discharge in the direction penetrating the insulating tube 10. It is effective. That is, the tubular ribs 12 are advantageous for simultaneously suppressing discharge that penetrates the insulating tube 10 and ensuring the strength of the insulating tube 10.
- the end portion 52 of the tubular conductive member 50 on the cathode 20 side includes the first virtual plane VPL1 including the end surface of the tubular rib 12 on the cathode 20 side and the second virtual plane VPL1 including the end surface of the tubular rib 12 on the anode 30 side. It may be located between the virtual plane VPL2. As will be described later, from the viewpoint of improving the withstand voltage, the first virtual surface VPL1 and the end surface 51 of the tubular conductive member 50 on the cathode 20 side are preferably separated from each other.
- FIG. 13 shows the simulation result showing the electric potential in the X-ray generation tube.
- the electric field strength is strong in the portion where the equipotential lines are small.
- the symbol A it can be seen that the electric field strength at the end of the tubular conductive member 50 is high, and a discharge that penetrates the insulating tube 10 is easily generated at this portion. Therefore, it can be seen that providing the tubular rib 12 at this portion to increase the thickness of the insulating tube 10 is effective for suppressing discharge.
- FIG. 2 schematically shows the configuration of the X-ray generation tube 1 according to the second embodiment of the present invention. Matters not mentioned in the second embodiment can comply with the first embodiment.
- the X-ray generation tube 1 of the second embodiment is different from the X-ray generation tube 1 of the first embodiment in that the X-ray generation tube 1 is arranged so as to cover the outside of the insulating tube 10 and includes a coating member 40 to which an electric potential is applied.
- the covering member 40 may be arranged so as to be electrically connected to the cathode 20 and the anode 30.
- the covering member 40 may cover the cathode 20, the insulating tube 10, and the anode 30 so as to contact the cathode 20 and the anode 30, for example.
- the sheet resistance value of the covering member 40 is smaller than the sheet resistance value of the insulating tube 10.
- the specific resistance of the insulating tube 10 at 100° C. is 1 ⁇ 10 ⁇ m or more and 1 ⁇ 10 15 ⁇ m or less
- the sheet resistance value of the insulating tube 10 at 100° C. is R s 1
- the sheet resistance of the covering member 40 at 100° C. Let the value be R s 2.
- R s 2 /R s 1 is preferably 1 ⁇ 10 ⁇ 5 or more and 1 ⁇ 10 ⁇ 1 or less.
- the covering member 40 can be made of, for example, a glassy material such as Kovar glass, glaze, or frit glass, or a metal oxide film.
- Covering the insulating pipe 10 with the covering member 40 is advantageous in that, for example, a smooth surface is formed on the outer side of the insulating pipe 10 and dirt is prevented from entering between particles forming the insulating pipe 10. .. As a result, the creeping withstand voltage on the outer surface of the insulating tube 10 can be improved. Further, since the covering member 40 has low conductivity, even if the outer surface of the insulating tube 10 is charged, the electric charge can be moved before a high potential difference occurs, and the insulating tube 10 is damaged. It is possible to suppress the occurrence of various discharges.
- FIG. 14 shows a simulation result showing the potential in the X-ray generating tube in which the insulating tube 10 is covered with the covering member 40.
- the electric field strength (interval between equipotential lines) on the surface of the covering member 40 is made uniform.
- the electric field strength at the end of the tubular conductive member 50 becomes stronger near the end of the tubular conductive member 50.
- providing the tubular rib 12 in the radial direction RD of the end portion 52 can exhibit a higher effect in order to suppress the discharge in the direction penetrating the insulating tube 10 in the configuration in which the covering member 40 is provided.
- FIG. 3 schematically shows the configuration of the X-ray generation tube 1 according to the third embodiment of the present invention. Matters not mentioned as the third embodiment can comply with the first or second embodiment.
- the covering member 40 that covers the insulating pipe 10 is provided, but the covering member 40 is not an essential configuration of the present invention.
- the covering member 40 is arranged so as to be electrically connected to the cathode 20 and the anode 30, but is arranged so as not to cover the side surfaces of the cathode 20 and the anode 30.
- FIG. 4 schematically shows the configuration of the X-ray generation tube 1 according to the fourth embodiment of the present invention. Matters not mentioned as the fourth embodiment can comply with the first or second embodiment.
- the covering member 40 is arranged so as to be electrically connected to the cathode 20 and the anode 30, but is arranged so as not to cover the side surfaces of the cathode 20 and the anode 30.
- the cathode 20 has a portion that covers a part of the side surface of the covering member 40
- the anode 30 has a portion that covers a part of the side surface of the covering member 40.
- FIG. 5 schematically shows the configuration of the X-ray generation tube 1 according to the fifth embodiment of the present invention. Matters not mentioned in the fifth embodiment can comply with the first to fourth embodiments.
- the tubular conductive member 50 is arranged so as to surround the end of the electron emission source 22 on the anode 30 side.
- FIG. 5 shows an example in which the configuration in which the tubular conductive member 50 is arranged so as to surround the end of the electron emission source 22 on the side of the anode 30 is applied to the X-ray generation tube 1 of the second embodiment.
- such a configuration is also applicable to the X-ray generation tubes 1 of the first, third, and fourth embodiments.
- FIG. 6 schematically shows the configuration of the X-ray generation tube 1 according to the sixth embodiment of the present invention. Matters not mentioned as the sixth embodiment can comply with the first to fifth embodiments.
- the tubular conductive member 50 is arranged such that a space is formed between the outer surface of the tubular conductive member 50 and the inner surface of the insulating tube 10. Such a configuration is also applicable to the X-ray generation tube 1 of the first to fifth embodiments.
- FIG. 7 schematically shows the configuration of the X-ray generation tube 1 according to the seventh embodiment of the present invention. Matters not mentioned in the seventh embodiment can comply with the first to sixth embodiments.
- the end surface 51 of the tubular conductive member 50 on the cathode 20 side belongs to the first virtual plane VPL1 including the end surface of the tubular rib 12 on the cathode 20 side.
- Such a configuration is also applicable to the X-ray generation tube 1 of the first, third to fifth embodiments.
- FIG. 8 schematically shows the configuration of the X-ray generation tube 1 according to the eighth embodiment of the present invention. Matters not mentioned as the eighth embodiment can comply with the first to seventh embodiments.
- the tubular rib 12 is arranged so as to project toward the outer space of the insulating pipe 10. Such a configuration is also applicable to the X-ray generation tube 1 of the first, third to seventh embodiments.
- FIG. 9 schematically shows the configuration of the X-ray generation tube 1 according to the ninth embodiment of the present invention. Matters not mentioned in the ninth embodiment can comply with the first to seventh embodiments.
- the tubular rib 12 includes an inner tubular rib 121 arranged to face the inner space of the insulating tube 10 and an outer tubular rib 122 arranged to project toward the outer space of the insulating tube 10. including. Such a configuration is also applicable to the X-ray generation tube 1 of the first, third to seventh embodiments.
- T be the thickness of the portion of the insulating tube 10 that does not have the tubular rib
- H be the thickness of the tubular rib
- TT be the thickness of the portion of the insulating tube 10 that has the tubular rib 12.
- the distance between the first virtual surface VPL1 and the end surface 51 of the tubular conductive member 50 on the cathode 20 side is L.
- the withstand voltage on the creeping surface is lower than the withstand voltage on the bulk, and it is experimentally known that the withstand voltage on the creeping surface is 1/3 to 1/10 times. ..
- the withstand voltage of the bulk of the insulator forming the insulating tube 10 is E1 (kV/mm), and the withstand voltage of the insulator in the creeping direction is E2 (kV/mm).
- the withstand voltage (withstand voltage in the path PH1) in the thickness direction of the portion of the insulating tube 10 having the tubular rib 12 is E1 ⁇ TT (kV).
- the withstand voltage across the creeping surface of the tubular rib 12 (withstand voltage in the path PH2) is E2 ⁇ (L+H)+E1 ⁇ T.
- the withstand voltage across the creeping surface of the tubular rib 12 (withstand voltage in the path PH2) is E2 ⁇ H+E1 ⁇ T.
- the configuration of FIG. 10 is superior to the configuration of FIG. 11 in terms of withstand voltage across the surface.
- FIG. 12 schematically shows the configuration of the X-ray generation tube 1 according to the tenth embodiment of the present invention. Matters not mentioned in the tenth embodiment can comply with the first to ninth embodiments.
- the insulating tube 10 includes the tubular ribs 12 arranged in the radial direction when viewed from the end of the tubular conductive member 50 on the cathode 20 side.
- the end portion 52 of the tubular conductive member 50 on the cathode 20 side includes a first virtual plane VPL1 including the end surface of the tubular rib 12 on the cathode 20 side and a second virtual plane including the end surface of the tubular rib 12 on the anode 30 side. It may be located between VPL2.
- the second virtual plane VPL2 can form an end surface of the insulating tube 10 on the anode 30 side.
- the end surface of the tubular rib 12 on the side of the anode 30 may belong to the same plane as the end surface of the insulating tube 10 on the side of the anode 30.
- the tubular rib 12 may be placed in contact with the anode 30.
- the X-ray generation tube 1 of the tenth embodiment may include a covering member 40 that is arranged so as to cover the outside of the insulating tube 10 and that is provided with an electric potential.
- the covering member 40 may be arranged so as to be electrically connected to the cathode 20 and the anode 30.
- the covering member 40 may cover the cathode 20, the insulating tube 10, and the anode 30 so as to contact the cathode 20 and the anode 30, for example.
- the sheet resistance value of the covering member 40 is smaller than the sheet resistance value of the insulating tube 10.
- FIG. 15 shows the configuration of the X-ray generator 100 according to one embodiment of the present invention.
- the X-ray generation device 100 may include an X-ray generation tube 1 and a drive circuit 3 that drives the X-ray generation tube 1.
- the X-ray generation device 100 may further include a booster circuit 2 that supplies a boosted voltage to the drive circuit 3.
- the X-ray generation device 100 may further include a storage container 4 that stores the X-ray generation tube 1, the drive circuit 3, and the booster circuit 2.
- the storage container 4 may be filled with insulating oil.
- FIG. 16 shows the configuration of the X-ray imaging apparatus 200 according to the embodiment of the present invention.
- the X-ray imaging apparatus 200 may include the X-ray generation apparatus 100 and an X-ray detection apparatus 110 that detects the X-rays 104 emitted from the X-ray generation apparatus 100 and transmitted through the object 106.
- the X-ray imaging apparatus 200 may further include a control device 120 and a display device 130.
- the X-ray detection device 110 may include an X-ray detector 112 and a signal processing unit 114.
- the control device 120 can control the X-ray generation device 100 and the X-ray detection device 110.
- the X-ray detector 112 detects or images the X-rays 104 emitted from the X-ray generator 100 and transmitted through the object 106.
- the signal processing unit 114 may process the signal output from the X-ray detector 112 and supply the processed signal to the control device 120.
- the control device 120 causes the display device 130 to display an image based on the signal supplied from the signal processing unit 114.
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Abstract
Description
Claims (16)
- 第1開口端および第2開口端を有する絶縁管と、
電子放出源を有し、前記絶縁管の前記第1開口端を閉塞するように配置された陰極と、
前記電子放出源からの電子が衝突することによってX線を発生するターゲットを有し、前記絶縁管の前記第2開口端を閉塞するように配置された陽極と、
前記絶縁管の内側空間において前記陽極から延びた管状導電部材と、を備え、
前記絶縁管は、前記第1開口端から離隔しかつ前記第2開口端から離隔した位置に管状リブを含み、
前記管状リブは、前記管状導電部材における前記陰極の側の端部から見て放射方向に配置されている、
ことを特徴とするX線発生管。 - 前記管状導電部材における前記陰極の側の端部は、前記管状リブにおける前記陰極の側の端面を含む第1仮想平面と、前記管状リブにおける前記陽極の側の端面を含む第2仮想平面との間に位置する、
ことを特徴とする請求項1に記載のX線発生管。 - 前記管状導電部材における前記陰極の側の端面は、前記管状リブにおける前記陰極の側の端面を含む第1仮想平面に属する、
ことを特徴とする請求項1に記載のX線発生管。 - 前記管状導電部材は、前記管状導電部材の外側面と前記絶縁管の内側面との間に空間が構成されるように配置されている、
ことを特徴とする請求項1乃至3のいずれか1項に記載のX線発生管。 - 前記管状リブは、前記内側空間に面するように配置されている、
ことを特徴とする請求項1乃至4のいずれか1項に記載のX線発生管。 - 前記管状リブは、前記絶縁管の外側空間に向けて突出するように配置されている、
ことを特徴とする請求項1乃至4のいずれか1項に記載のX線発生管。 - 前記管状リブは、前記内側空間に面するように配置された内側管状リブと、前記絶縁管の外側空間に向けて突出するように配置された外側管状リブと、を含む、
ことを特徴とする請求項1乃至4のいずれか1項に記載のX線発生管。 - 前記絶縁管の外側を被覆するように配置され、電位が与えられる被覆部材を更に備え、
前記被覆部材のシート抵抗値は、前記絶縁管のシート抵抗値より小さい、
ことを特徴とする請求項1乃至7のいずれか1項に記載のX線発生管。 - 前記被覆部材は、前記陰極および前記陽極に電気的に接続されている、
ことを特徴とする請求項8に記載のX線発生管。 - 前記管状導電部材は、前記電子放出源における前記陽極の側の端部を取り囲むように配置されている、
ことを特徴とする請求項1乃至9のいずれか1項に記載のX線発生管。 - 第1開口端および第2開口端を有する絶縁管と、
電子放出源を有し、前記絶縁管の前記第1開口端を閉塞するように配置された陰極と、
前記電子放出源からの電子が衝突することによってX線を発生するターゲットを有し、前記絶縁管の前記第2開口端を閉塞するように配置された陽極と、
前記絶縁管の内側空間において前記陽極から延びた管状導電部材と、
前記絶縁管の外側を被覆するように配置され、前記絶縁管のシート抵抗値より小さいシート抵抗値を有し、電位が与えられる被覆部材と、を備え、
前記絶縁管は、前記管状導電部材における前記陰極の側の端部から見て放射方向に配置された管状リブを含む、
ことを特徴とするX線発生管。 - 前記被覆部材は、前記陰極および前記陽極に電気的に接続されている、
ことを特徴とする請求項11に記載のX線発生管。 - 前記管状導電部材の前記陰極の側の端部は、前記管状リブの前記陰極の側の端面を含む仮想平面と、前記第2開口端を含む仮想平面との間に位置する、
ことを特徴とする請求項11又は12に記載のX線発生管。 - 前記管状導電部材は、前記電子放出源における前記陽極の側の端部を取り囲むように配置されている、
ことを特徴とする請求項11乃至13のいずれか1項に記載のX線発生管。 - 請求項1乃至14のいずれか1項に記載のX線発生管と、
前記X線発生管を駆動する駆動回路と、
を備えることを特徴とするX線発生装置。 - 請求項15に記載のX線発生装置と、
前記X線発生装置から放射され物体を透過したX線を検出するX線検出装置と、
を備えることを特徴とするX線撮像装置。
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PCT/JP2018/048607 WO2020136911A1 (ja) | 2018-12-28 | 2018-12-28 | X線発生管、x線発生装置およびx線撮像装置 |
EP18944566.1A EP3905301A4 (en) | 2018-12-28 | 2018-12-28 | X-RAY TUBE, X-RAY GENERATING DEVICE AND X-RAY IMAGING DEVICE |
JP2019532145A JP6609088B1 (ja) | 2018-12-28 | 2018-12-28 | X線発生管、x線発生装置およびx線撮像装置 |
CN201880100495.1A CN113272931B (zh) | 2018-12-28 | 2018-12-28 | X射线产生管、x射线产生装置及x射线成像装置 |
KR1020217019801A KR102367142B1 (ko) | 2018-12-28 | 2018-12-28 | X선 발생관, x선 발생 장치 및 x선 촬상 장치 |
US16/449,968 US10720299B1 (en) | 2018-12-28 | 2019-06-24 | X-ray generating tube, X-ray generating apparatus, and X-ray imaging apparatus |
TW108146834A TWI766217B (zh) | 2018-12-28 | 2019-12-20 | X射線產生管、x射線產生裝置及x射線攝像裝置 |
TW110124726A TWI766748B (zh) | 2018-12-28 | 2019-12-20 | X射線產生管、x射線產生裝置及x射線攝像裝置 |
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JP7484032B1 (ja) | 2023-01-25 | 2024-05-15 | キヤノンアネルバ株式会社 | X線発生装置およびx線撮像装置 |
JP7486694B1 (ja) | 2023-01-25 | 2024-05-17 | キヤノンアネルバ株式会社 | X線発生装置およびx線撮像装置 |
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US11152184B2 (en) * | 2019-08-06 | 2021-10-19 | Moxtek, Inc. | X-ray tube insulation, window, and focusing plate |
JP6683903B1 (ja) * | 2019-09-03 | 2020-04-22 | キヤノンアネルバ株式会社 | X線発生装置およびx線撮像装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013101879A (ja) * | 2011-11-09 | 2013-05-23 | Canon Inc | 放射線発生管および放射線発生装置 |
JP2014041714A (ja) * | 2012-08-21 | 2014-03-06 | Canon Inc | 放射線発生管、放射線発生ユニット及び放射線撮影システム |
JP2014086147A (ja) * | 2012-10-19 | 2014-05-12 | Canon Inc | 放射線発生管、放射線発生ユニット及び放射線撮影システム |
JP2014241230A (ja) * | 2013-06-12 | 2014-12-25 | キヤノン株式会社 | 放射線発生管及びそれを用いた放射線発生装置と放射線撮影システム |
JP2016103451A (ja) | 2014-11-28 | 2016-06-02 | キヤノン株式会社 | X線発生管、x線発生装置およびx線撮影システム |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58106745A (ja) * | 1981-12-18 | 1983-06-25 | Hitachi Ltd | 高電圧絶縁真空外囲器 |
JP2766243B2 (ja) * | 1995-03-20 | 1998-06-18 | 日本電気株式会社 | 真空用絶縁スペーサ |
DE19854199C1 (de) * | 1998-11-24 | 2000-03-30 | Siemens Ag | Röntgenbildverstärker mit Klebemontagetechnik und Verfahren zu dessen Herstellung |
JP4435124B2 (ja) * | 2005-08-29 | 2010-03-17 | 株式会社東芝 | X線管 |
JP5800578B2 (ja) * | 2011-05-31 | 2015-10-28 | キヤノン株式会社 | X線管 |
JP5804777B2 (ja) | 2011-06-01 | 2015-11-04 | キヤノン株式会社 | X線発生管及び、x線発生装置 |
JP6230389B2 (ja) * | 2013-06-05 | 2017-11-15 | キヤノン株式会社 | X線発生管及びそれを用いたx線発生装置とx線撮影システム |
JP2017054679A (ja) * | 2015-09-09 | 2017-03-16 | 東芝電子管デバイス株式会社 | 固定陽極型x線管装置 |
-
2018
- 2018-12-28 KR KR1020217019801A patent/KR102367142B1/ko active IP Right Grant
- 2018-12-28 CN CN201880100495.1A patent/CN113272931B/zh active Active
- 2018-12-28 EP EP18944566.1A patent/EP3905301A4/en active Pending
- 2018-12-28 JP JP2019532145A patent/JP6609088B1/ja active Active
- 2018-12-28 WO PCT/JP2018/048607 patent/WO2020136911A1/ja unknown
-
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- 2019-12-20 TW TW110124726A patent/TWI766748B/zh active
- 2019-12-20 TW TW108146834A patent/TWI766217B/zh active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013101879A (ja) * | 2011-11-09 | 2013-05-23 | Canon Inc | 放射線発生管および放射線発生装置 |
JP2014041714A (ja) * | 2012-08-21 | 2014-03-06 | Canon Inc | 放射線発生管、放射線発生ユニット及び放射線撮影システム |
JP2014086147A (ja) * | 2012-10-19 | 2014-05-12 | Canon Inc | 放射線発生管、放射線発生ユニット及び放射線撮影システム |
JP2014241230A (ja) * | 2013-06-12 | 2014-12-25 | キヤノン株式会社 | 放射線発生管及びそれを用いた放射線発生装置と放射線撮影システム |
JP2016103451A (ja) | 2014-11-28 | 2016-06-02 | キヤノン株式会社 | X線発生管、x線発生装置およびx線撮影システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP3905301A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7484032B1 (ja) | 2023-01-25 | 2024-05-15 | キヤノンアネルバ株式会社 | X線発生装置およびx線撮像装置 |
JP7486694B1 (ja) | 2023-01-25 | 2024-05-17 | キヤノンアネルバ株式会社 | X線発生装置およびx線撮像装置 |
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CN113272931B (zh) | 2022-10-18 |
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TWI766217B (zh) | 2022-06-01 |
EP3905301A1 (en) | 2021-11-03 |
TWI766748B (zh) | 2022-06-01 |
EP3905301A4 (en) | 2022-04-06 |
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US10720299B1 (en) | 2020-07-21 |
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