公开(公告)号：US20090129550A1

公开(公告)日：2009-05-21

申请号：US11942656

申请日：2007-11-19

申请人： Steve G. Bandy ,  Gary F. Virshup ,  Michael Curzon Green ,  James Russell Boye ,  Dennis Runnoe ,  Robert Clark Treseder ,  David Humber

发明人： Steve G. Bandy ,  Gary F. Virshup ,  Michael Curzon Green ,  James Russell Boye ,  Dennis Runnoe ,  Robert Clark Treseder ,  David Humber

IPC分类号： H01J35/12

CPC分类号： H01J1/16 ,  H01J1/135 ,  H01J1/15 ,  H01J35/06 ,  H01J2201/2803 ,  H01J2201/281 ,  H01J2201/2867 ,  H01J2235/1212

摘要： A filament assembly for use in an x-ray emitting device or other filament-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum enclosure that houses both an anode having a target surface, and a cathode positioned with respect to the anode. The cathode includes a filament assembly for emitting a beam of electrons during tube operation. The filament assembly comprises a heat sink and a plurality of filament segments. The filament segments are configured for simultaneous emission of an electron beam for impingement on the target surface of the anode, and are electrically connected in series. Each filament segment includes first and second end portions that are thermally connected to the heat sink, and a central portion that can be configured with a modified work function for preferential electron emission.

摘要翻译： 公开了一种用于x射线发射装置或其它含灯丝装置的灯丝组件。 在一个实施例中，公开了一种X射线管，其包括容纳具有目标表面的阳极和相对于阳极定位的阴极的真空外壳。 阴极包括在管操作期间发射电子束的灯丝组件。 灯丝组件包括散热器和多个灯丝段。 灯丝段被配置为同时发射用于冲击阳极的靶表面的电子束，并且串联电连接。 每个细丝段包括热连接到散热器的第一和第二端部，以及可以配置有用于优先电子发射的修改功函数的中心部分。

公开(公告)号：US07539286B1

公开(公告)日：2009-05-26

申请号：US11942656

申请日：2007-11-19

申请人： Steve Bandy ,  Gary F Virshup ,  Michael Curzon Green ,  James Russell Boye ,  Dennis Runnoe ,  Robert Clark Treseder ,  David Humber

发明人： Steve Bandy ,  Gary F Virshup ,  Michael Curzon Green ,  James Russell Boye ,  Dennis Runnoe ,  Robert Clark Treseder ,  David Humber

IPC分类号： H01J35/06

CPC分类号： H01J1/16 ,  H01J1/135 ,  H01J1/15 ,  H01J35/06 ,  H01J2201/2803 ,  H01J2201/281 ,  H01J2201/2867 ,  H01J2235/1212

摘要： A filament assembly for use in an x-ray emitting device or other filament-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum enclosure that houses both an anode having a target surface, and a cathode positioned with respect to the anode. The cathode includes a filament assembly for emitting a beam of electrons during tube operation. The filament assembly comprises a heat sink and a plurality of filament segments. The filament segments are configured for simultaneous emission of an electron beam for impingement on the target surface of the anode, and are electrically connected in series. Each filament segment includes first and second end portions that are thermally connected to the heat sink, and a central portion that can be configured with a modified work function for preferential electron emission.

摘要翻译： 公开了一种用于x射线发射装置或其它含灯丝装置的灯丝组件。 在一个实施例中，公开了一种X射线管，其包括容纳具有目标表面的阳极和相对于阳极定位的阴极的真空外壳。 阴极包括在管操作期间发射电子束的灯丝组件。 灯丝组件包括散热器和多个灯丝段。 灯丝段被配置为同时发射用于冲击阳极的靶表面的电子束，并且串联电连接。 每个细丝段包括热连接到散热器的第一和第二端部，以及可以配置有用于优先电子发射的修改功函数的中心部分。

公开(公告)号：US09524845B2

公开(公告)日：2016-12-20

申请号：US13352641

申请日：2012-01-18

申请人： James Russell Boye ,  Robert Clark Treseder

发明人： James Russell Boye ,  Robert Clark Treseder

IPC分类号： H01J35/06 ,  H01J35/14 ,  H01J35/30

CPC分类号： H01J35/06 ,  H01J35/14 ,  H01J35/30 ,  H01J2235/06

摘要： An x-ray tube cathode with magnetic electron beam steering. In one example embodiment, an x-ray tube cathode includes a cathode head and an electron emitter. The cathode head includes electrically conductive and non-magnetic material integrated with magnetic material. The cathode head defines an emitter slot in a portion of electrically conductive and non-magnetic material positioned between two portions of magnetic material. The electron emitter is positioned within the emitter slot. The electron emitter is configured to emit a beam of electrons. The beam of electrons is configured to be both focused by the electrically conductive and non-magnetic material and steered during beam formation by the magnetic material.

摘要翻译： 具有磁电子束转向的X射线管阴极。 在一个示例性实施例中，x射线管阴极包括阴极头和电子发射器。 阴极头包括与磁性材料集成的导电和非磁性材料。 阴极头在位于磁性材料的两个部分之间的导电和非磁性材料的一部分中限定发射器狭缝。 电子发射器位于发射极槽内。 电子发射器被配置为发射电子束。 电子束被配置为由导电和非磁性材料聚焦，并且在通过磁性材料形成光束期间转向。

公开(公告)号：US20130182825A1

公开(公告)日：2013-07-18

申请号：US13352641

申请日：2012-01-18

申请人： James Russell Boye ,  Robert Clark Treseder

发明人： James Russell Boye ,  Robert Clark Treseder

IPC分类号： H01J35/06

CPC分类号： H01J35/06 ,  H01J35/14 ,  H01J35/30 ,  H01J2235/06

摘要： An x-ray tube cathode with magnetic electron beam steering. In one example embodiment, an x-ray tube cathode includes a cathode head and an electron emitter. The cathode head includes electrically conductive and non-magnetic material integrated with magnetic material. The cathode head defines an emitter slot in a portion of electrically conductive and non-magnetic material positioned between two portions of magnetic material. The electron emitter is positioned within the emitter slot. The electron emitter is configured to emit a beam of electrons. The beam of electrons is configured to be both focused by the electrically conductive and non-magnetic material and steered during beam formation by the magnetic material.

摘要翻译： 具有磁电子束转向的X射线管阴极。 在一个示例性实施例中，x射线管阴极包括阴极头和电子发射器。 阴极头包括与磁性材料集成的导电和非磁性材料。 阴极头在位于磁性材料的两个部分之间的导电和非磁性材料的一部分中限定发射器狭缝。 电子发射器位于发射极槽内。 电子发射器被配置为发射电子束。 电子束被配置为由导电和非磁性材料聚焦，并且在通过磁性材料形成光束期间转向。

公开(公告)号：US20130083899A1

公开(公告)日：2013-04-04

申请号：US13251027

申请日：2011-09-30

申请人： Kasey Otho Greenland ,  James Russell Boye

发明人： Kasey Otho Greenland ,  James Russell Boye

IPC分类号： H01J35/06

CPC分类号： H01J35/08 ,  H01J35/06 ,  H01J2235/068

摘要： Dual-energy x-ray tubes. In one example embodiment, a dual-energy x-ray tube includes an evacuated enclosure, an anode positioned within the evacuated enclosure, a first cathode positioned within the evacuated enclosure, and a second cathode positioned within the evacuated enclosure. The first cathode and the second cathode are configured to operate simultaneously at different voltages.

摘要翻译： 双能X射线管。 在一个示例性实施例中，双能X射线管包括抽真空的外壳，位于抽空外壳内的阳极，位于抽真空的外壳内的第一阴极和位于抽空外壳内的第二阴极。 第一阴极和第二阴极配置成在不同电压下同时工作。

公开(公告)号：US07903788B2

公开(公告)日：2011-03-08

申请号：US12238200

申请日：2008-09-25

申请人： Paul D. Moore ,  James Russell Boye

发明人： Paul D. Moore ,  James Russell Boye

IPC分类号： H01J35/06

CPC分类号： H01J35/06 ,  H01J2235/06

摘要： An electron emitter assembly for use in an x-ray emitting device or other electron emitter-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum enclosure that houses both an anode having a target surface, and a cathode positioned with respect to the anode. The cathode includes an electron emitter having a plurality of substantially parallel emission surfaces that collectively emit a beam of electrons for impingement on the target anode. In one aspect, the plurality of substantially parallel emission surfaces are angled relative focusing region so as to provide a substantially uniform thermal load on the target anode. In another aspect, the electron emitter includes a plurality of cut-outs that accommodate thermal expansion in the plane of the emitter. Accommodating thermal expansion in the plane of the emitter prevents distortions to the emitter that would tend to alter the focusing of the electrons on the target anode. Providing a substantially uniform thermal load on the target anode and preventing thermal distortion of the emitter lead to higher x-ray flux and better focusing for higher quality x-ray images.

摘要翻译： 公开了一种用于x射线发射器件或其它含电子发射器的器件中的电子发射器组件。 在一个实施例中，公开了一种X射线管，其包括容纳具有目标表面的阳极和相对于阳极定位的阴极的真空外壳。 阴极包括具有多个基本上平行的发射表面的电子发射体，其共同地发射用于冲击靶阳极的电子束。 在一个方面，多个基本平行的发射表面是成角度的相对聚焦区域，以便在目标阳极上提供基本均匀的热负荷。 在另一方面，电子发射器包括适应发射器平面热膨胀的多个切口。 在发射体的平面内容纳热膨胀可防止发射体发生变形，从而改变目标阳极上电子的聚焦。 在目标阳极上提供基本均匀的热负荷，并防止发射极的热变形导致更高的x射线通量，并更好地聚焦以获得更高质量的x射线图像。

公开(公告)号：US09324536B2

公开(公告)日：2016-04-26

申请号：US13251027

申请日：2011-09-30

申请人： Kasey Otho Greenland ,  James Russell Boye

发明人： Kasey Otho Greenland ,  James Russell Boye

IPC分类号： H01J35/06 ,  H01J35/08

CPC分类号： H01J35/08 ,  H01J35/06 ,  H01J2235/068

摘要： Dual-energy x-ray tubes. In one example embodiment, a dual-energy x-ray tube includes an evacuated enclosure, an anode positioned within the evacuated enclosure, a first cathode positioned within the evacuated enclosure, and a second cathode positioned within the evacuated enclosure. The first cathode and the second cathode are configured to operate simultaneously at different voltages.

摘要翻译： 双能X射线管。 在一个示例性实施例中，双能X射线管包括抽真空的外壳，位于抽空外壳内的阳极，位于抽真空的外壳内的第一阴极和位于抽空外壳内的第二阴极。 第一阴极和第二阴极配置成在不同电压下同时工作。

公开(公告)号：US20100278307A1

公开(公告)日：2010-11-04

申请号：US12238200

申请日：2008-09-25

申请人： Paul D. Moore ,  James Russell Boye

发明人： Paul D. Moore ,  James Russell Boye

IPC分类号： H01J35/06

CPC分类号： H01J35/06 ,  H01J2235/06

摘要： An electron emitter assembly for use in an x-ray emitting device or other electron emitter-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum enclosure that houses both an anode having a target surface, and a cathode positioned with respect to the anode. The cathode includes an electron emitter having a plurality of substantially parallel emission surfaces that collectively emit a beam of electrons for impingement on the target anode. In one aspect, the plurality of substantially parallel emission surfaces are angled relative focusing region so as to provide a substantially uniform thermal load on the target anode. In another aspect, the electron emitter includes a plurality of cut-outs that accommodate thermal expansion in the plane of the emitter. Accommodating thermal expansion in the plane of the emitter prevents distortions to the emitter that would tend to alter the focusing of the electrons on the target anode. Providing a substantially uniform thermal load on the target anode and preventing thermal distortion of the emitter lead to higher x-ray flux and better focusing for higher quality x-ray images.

摘要翻译： 公开了一种用于x射线发射器件或其它含电子发射器的器件中的电子发射器组件。 在一个实施例中，公开了一种X射线管，其包括容纳具有目标表面的阳极和相对于阳极定位的阴极的真空外壳。 阴极包括具有多个基本上平行的发射表面的电子发射体，其共同地发射用于冲击靶阳极的电子束。 在一个方面，多个基本平行的发射表面是成角度的相对聚焦区域，以便在目标阳极上提供基本均匀的热负荷。 在另一方面，电子发射器包括适应发射器平面热膨胀的多个切口。 在发射体的平面内容纳热膨胀可防止发射体发生变形，从而改变目标阳极上电子的聚焦。 在目标阳极上提供基本均匀的热负荷，并防止发射极的热变形导致更高的x射线通量，并更好地聚焦以获得更高质量的x射线图像。