公开(公告)号：US10008357B2

公开(公告)日：2018-06-26

申请号：US15717384

申请日：2017-09-27

Applicant: NIKON METROLOGY NV

Inventor： Roger Hadland

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

CPC classification number: H01J35/025 ,  F16C33/768 ,  F16C35/042 ,  F16J15/16 ,  H01J29/48 ,  H01J35/04 ,  H01J35/06 ,  H01J35/101 ,  H01J35/106 ,  H01J35/108 ,  H01J35/116 ,  H01J35/16 ,  H01J37/065 ,  H01J2235/0236 ,  H01J2235/083 ,  H01J2235/086 ,  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：US20180033580A1

公开(公告)日：2018-02-01

申请号：US15717388

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：US20160020058A1

公开(公告)日：2016-01-21

申请号：US14774424

申请日：2014-03-12

Applicant: NIKON METROLOGY NV

Inventor： Roger HADLAND

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

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 (120) 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 (500), 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 (123a, 123b) electrically connected intermediate of a first voltage multiplier (122a, 122b) and a second voltage multiplier (122b, 122c). The electron beam apparatus includes control photodetectors (202a, 202b—not shown) and photo emitters (201a, 202a) having a transparent conductive shield (203a and 203b, 203c—not shown) arranged therebetween. The rotary vacuum seal includes a pumpable chamber (302) at a position intermediate between high-pressure and low-pressure ends of a bore (301) for a rotating shaft (401). The rotary target assembly is configured such that when a torque between a bearing housing (403) and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target (500) has a plurality of target plates (560) 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 (123a) maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode.

Abstract translation: 本文公开了一种用于x射线源的高压发生器（120），x射线枪，电子束装置，旋转真空密封件，用于x射线源的靶组件，旋转x射线发射 目标（500）和x射线源。 这些各个方面可以单独地和/或一起实现能够在高达500kV及以上的能量下运行的x射线源，其适用于商业和研究的X射线应用如计算机断层摄影。 特别地，高电压发生器包括电连接第一电压倍增器（122a，122b）和第二电压倍增器（122b，122c）之间的屏蔽电极（123a，123b）。 电子束装置包括控制光电检测器（202a，202b，未示出）和具有布置在其间的透明导电屏蔽（203a和203b，203c-未示出）的光发射器（201a，202a）。 旋转式真空密封件包括位于用于旋转轴（401）的孔（301）的高压和低压端之间的位置的可泵送室（302）。 旋转目标组件被构造成使得当轴承壳体（403）和真空壳体之间的扭矩超过预定扭矩时，轴承壳体相对于真空壳体旋转。 旋转X射线发射目标（500）具有支撑在轮毂上的多个目标板（560），所述板布置在轮毂上以围绕轮毂的轴线旋转提供环形目标区域。 X射线枪设置有相对于与电子束发射阴极不同的x射线靶保持在电位差的屏蔽电极（123a）。

公开(公告)号：US20120121065A1

公开(公告)日：2012-05-17

申请号：US13358900

申请日：2012-01-26

Applicant: Carey Shawn Rogers ,  Richard Michael Roffers

Inventor： Carey Shawn Rogers ,  Richard Michael Roffers

IPC: G01N23/06 ,  B23P11/00 ,  H01J35/20 ,  H01J35/00 ,  H01J35/14

CPC classification number: H01J35/16 ,  H01J35/101 ,  H01J2235/1086 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/165 ,  H01J2235/167 ,  H01J2235/168 ,  H01J2235/20 ,  Y10T29/49826

Abstract: An x-ray tube includes a casing having a cathode and an anode enclosed therein, and a separator attached to an inner wall of the casing and having a conductance limiter therein, the separator positioned to separate the anode from the cathode.

Abstract translation: X射线管包括具有封闭在其中的阴极和阳极的壳体，以及附接到壳体的内壁并且在其中具有电导限制器的隔膜，隔板定位成将阳极与阴极分离。

公开(公告)号：US07881436B2

公开(公告)日：2011-02-01

申请号：US12119281

申请日：2008-05-12

Applicant: Carey Shawn Rogers ,  Richard Michael Roffers

Inventor： Carey Shawn Rogers ,  Richard Michael Roffers

IPC: H01J35/02

CPC classification number: H01J35/16 ,  H01J35/101 ,  H01J2235/1086 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/165 ,  H01J2235/167 ,  H01J2235/168 ,  H01J2235/20 ,  Y10T29/49826

Abstract: An x-ray tube includes an anode, a first chamber enclosing the anode and having a first pressure therein, a cathode, and a second chamber enclosing the cathode and having a second pressure therein. A separator is positioned between the first and second chambers and has a conductance limiter therein.

Abstract translation: x射线管包括阳极，封闭阳极并在其中具有第一压力的第一腔室，阴极以及封闭阴极并且在其中具有第二压力的第二腔室。 分隔件位于第一和第二室之间并且其中具有电导限制器。

公开(公告)号：US20110013750A1

公开(公告)日：2011-01-20

申请号：US12893614

申请日：2010-09-29

Applicant: Carey Shawn Rogers ,  Richard Michael Roffers

Inventor： Carey Shawn Rogers ,  Richard Michael Roffers

IPC: H01J35/20

CPC classification number: H01J35/16 ,  H01J35/101 ,  H01J2235/1086 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/165 ,  H01J2235/167 ,  H01J2235/168 ,  H01J2235/20 ,  Y10T29/49826

Abstract: An x-ray tube includes an anode, a first chamber enclosing the anode and having a first pressure therein, a cathode, and a second chamber enclosing the cathode and having a second pressure therein. A separator is positioned between the first and second chambers and has a conductance limiter therein.

Abstract translation: x射线管包括阳极，封闭阳极并在其中具有第一压力的第一腔室，阴极以及封闭阴极并且在其中具有第二压力的第二腔室。 分隔件位于第一和第二室之间并且其中具有电导限制器。

公开(公告)号：US07245700B2

公开(公告)日：2007-07-17

申请号：US10886080

申请日：2004-07-07

Applicant: Harith Vadari ,  Ram Turaga ,  Mayank Tiwari ,  Hombe Gowda ,  Mark Ernest Vermilyea ,  Frédéric Dahan ,  Thomas Saint Martin

Inventor： Harith Vadari ,  Ram Turaga ,  Mayank Tiwari ,  Hombe Gowda ,  Mark Ernest Vermilyea ,  Frédéric Dahan ,  Thomas Saint Martin

IPC: H01J35/00

CPC classification number: H01J35/101 ,  F16C17/026 ,  F16C33/109 ,  F16C2380/16 ,  H01J2235/1086 ,  H01J2235/20

Abstract: A system and method for providing a sealing arrangement in an X-ray tube are provided. The X-ray tube includes a rotating portion having a plurality of ball bearings and a liquid metal within a housing having the ball bearings therein. The rotating portion is configured to rotate an anode. The X-ray tube further includes a sealing portion formed by a liquid metal vacuum interface configured in a radial direction to resist flow of liquid metal from the housing to a vacuum portion.

Abstract translation: 提供了一种用于在X射线管中提供密封装置的系统和方法。 X射线管包括具有多个球轴承的旋转部分和在其中具有球轴承的壳体内的液体金属。 旋转部分构造成旋转阳极。 X射线管还包括由液态金属真空接口形成的密封部分，该液体金属真空接口沿径向方向构造以阻止液态金属从壳体流到真空部分。

公开(公告)号：US10020157B2

公开(公告)日：2018-07-10

申请号：US15717364

申请日：2017-09-27

Applicant: NIKON METROLOGY NV

Inventor： Roger Hadland

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

CPC classification number: H01J35/025 ,  F16C33/768 ,  F16C35/042 ,  F16J15/16 ,  H01J29/48 ,  H01J35/04 ,  H01J35/06 ,  H01J35/101 ,  H01J35/106 ,  H01J35/108 ,  H01J35/116 ,  H01J35/16 ,  H01J37/065 ,  H01J2235/0236 ,  H01J2235/083 ,  H01J2235/086 ,  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 computerized 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：US20180033581A1

公开(公告)日：2018-02-01

申请号：US15717393

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：US09793084B2

公开(公告)日：2017-10-17

申请号：US13232166

申请日：2011-09-14

Applicant: Jani Reijonen ,  Joel Lee Groves

Inventor： Jani Reijonen ,  Joel Lee Groves

IPC: G21G4/02 ,  H01J35/04 ,  H01J35/16 ,  H05G1/06 ,  H05H3/06

CPC classification number: H01J35/04 ,  H01J35/16 ,  H01J2235/02 ,  H01J2235/06 ,  H01J2235/086 ,  H01J2235/165 ,  H01J2235/20 ,  H05G1/06 ,  H05H3/06

Abstract: Systems, methods, and devices with improved electrode configuration for downhole nuclear radiation generators are provided. For example, one embodiment of a nuclear radiation generator capable of downhole operation may include a charged particle source, a target material, and an acceleration column between the charged particle source and the target material. The acceleration column may include an intermediate electrode that remains floating at a variable potential, being electrically isolated from the rest of the acceleration column.