公开(公告)号：US08300768B2

公开(公告)日：2012-10-30

申请号：US12868437

申请日：2010-08-25

Applicant: Susumu Hashimoto ,  Toyomasa Honda ,  Sanae Harada ,  Hiroaki Miyazaki

Inventor： Susumu Hashimoto ,  Toyomasa Honda ,  Sanae Harada ,  Hiroaki Miyazaki

IPC: H01J35/00

CPC classification number: A61B6/032 ,  A61B6/4021 ,  H01J35/04 ,  H01J35/06 ,  H01J35/14 ,  H01J35/30 ,  H01J2235/06 ,  H05G1/52

Abstract: An X-ray tube includes: a Wehnelt electrode having a dent inside; a filament arranged in the dent of the Wehnelt electrode and configured to emit an electron beam when electricity is passed therethrough; an anode configured to emit an X-ray in response to the incident electron beam; an electrode part configured by at least one pair of electrode members, the electrode members facing each other across a path of the electron beam, a voltage being applied to each of the electrode members; a voltage controller configured to control the voltage applied to the electrode part; and a shield member arranged in contact with the Wehnelt electrode and configured to cover part of the dent by a projecting part.

Abstract translation: X射线管包括：具有凹陷的Wehnelt电极; 布置在Wehnelt电极的凹陷中并构造成当电流通过时发射电子束的灯丝; 配置为响应于入射电子束发射X射线的阳极; 电极部件，由至少一对电极部件构成，所述电极部件跨越所述电子束的路径彼此面对，对每个所述电极部件施加电压; 电压控制器，被配置为控制施加到所述电极部分的电压; 以及屏蔽构件，其布置成与所述Wehnelt电极接触并且构造成通过突出部覆盖所述凹陷的一部分。

公开(公告)号：US08294350B2

公开(公告)日：2012-10-23

申请号：US12557706

申请日：2009-09-11

Applicant: Joerg Freudenberger ,  Wolfgang Kutschera ,  Gunter Roehrich ,  Karin Soeldner

Inventor： Joerg Freudenberger ,  Wolfgang Kutschera ,  Gunter Roehrich ,  Karin Soeldner

IPC: H01J1/15

CPC classification number: H01J35/06 ,  H01J1/16 ,  H01J35/14 ,  H01J2235/06

Abstract: A cathode HAS a cathode head in which a surface emitter is arranged that emits electrons upon application of a heating voltage. The surface emitter is fashioned as a parallel surface emitter with at least two emitter surfaces spaced apart from one another, to which at least one electrically conductive cutoff electrode is fed that is galvanically separated from the parallel surface emitter. Such a cathode has a good cutoff capability.

Abstract translation: 阴极HAS是阴极头，其中布置有施加加热电压时发射电子的表面发射体。 表面发射器被形成为具有彼此间隔开的至少两个发射极表面的平行表面发射器，至少一个导电截止电极被馈送到与该平行表面发射极电流分离的至少一个导电截止电极。 这样的阴极具有良好的截止能力。

公开(公告)号：US20120163550A1

公开(公告)日：2012-06-28

申请号：US13337940

申请日：2011-12-27

Applicant: Tomohiro Chaki ,  Koichi Kato ,  Masahiro Nonoguchi ,  Masashi Kageyama ,  Masaru Kuribayashi

Inventor： Tomohiro Chaki ,  Koichi Kato ,  Masahiro Nonoguchi ,  Masashi Kageyama ,  Masaru Kuribayashi

IPC: H01J35/06

CPC classification number: H01J35/10 ,  H01J35/06 ,  H01J35/14 ,  H01J35/16 ,  H01J2235/06 ,  H01J2235/086 ,  H01J2235/166 ,  H01J2235/168

Abstract: Provided is an X-ray generator for generating X-rays from an X-ray focal point that is a region in which electrons emitted from a filament impinge upon a rotating anode. The X-ray generator has a Wehnelt electrode for surrounding the filament, an attachment part formed integrally with the Wehnelt electrode, a pedestal to which the attachment part is attached, and a casing for housing the pedestal and the anticathode. The width of the space in which the anticathode is housed by the casing is less than the width of the space in which the pedestal is housed by the casing. The Wehnelt electrode extends into the space in which the anticathode is housed by the casing, in a state in which the attachment part is attached to the pedestal.

Abstract translation: 提供一种用于从X射线焦点产生X射线的X射线发生器，X射线焦点是从灯丝发射的电子撞击在旋转阳极上的区域。 X射线发生器具有用于围绕灯丝的Wehnelt电极，与Wehnelt电极一体形成的安装部分，安装有附接部件的基座以及用于容纳基座和抗电极的壳体。 由外壳容纳防蚁的空间的宽度小于由壳体容纳基座的空间的宽度。 Wehnelt电极在安装部分附接到基座的状态下延伸到由壳体容纳阴极的空间中。

公开(公告)号：US20110116593A1

公开(公告)日：2011-05-19

申请号：US12617737

申请日：2009-11-13

Applicant: Yun Zou ,  Vance Scott Robinson ,  Louis Paul Inzinna ,  Kenneth Roger Conway ,  Sergio Lemaitre ,  Mark Alan Frontera ,  Xi Zhang ,  Vasile Bogdan Neculaes

Inventor： Yun Zou ,  Vance Scott Robinson ,  Louis Paul Inzinna ,  Kenneth Roger Conway ,  Sergio Lemaitre ,  Mark Alan Frontera ,  Xi Zhang ,  Vasile Bogdan Neculaes

IPC: H05G1/60 ,  H01J29/46 ,  H01J35/14

CPC classification number: H01J35/065 ,  H01J35/14 ,  H01J2235/06 ,  H01J2235/167

Abstract: An indirectly heated cathode assembly is presented. The indirectly heated cathode assembly includes at least one electron source for generating a first electron beam, an emitter for producing a second electron beam when heated by the first electron beam and a focusing electrode for controlling, and directing the first electron beam towards the emitter.

Abstract translation: 提出了间接加热的阴极组件。 间接加热的阴极组件包括用于产生第一电子束的至少一个电子源，用于由第一电子束加热时产生第二电子束的发射体和用于控制第一电子束并将其引向发射极的聚焦电极。

公开(公告)号：US07903788B2

公开(公告)日：2011-03-08

申请号：US12238200

申请日：2008-09-25

Applicant: Paul D. Moore ,  James Russell Boye

Inventor： Paul D. Moore ,  James Russell Boye

IPC: H01J35/06

CPC classification number: H01J35/06 ,  H01J2235/06

Abstract: 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.

Abstract translation: 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：US20110051884A1

公开(公告)日：2011-03-03

申请号：US12868437

申请日：2010-08-25

Applicant: Susumu HASHIMOTO ,  Toyomasa Honda ,  Sanae Harada ,  Hiroaki Miyazaki

Inventor： Susumu HASHIMOTO ,  Toyomasa Honda ,  Sanae Harada ,  Hiroaki Miyazaki

IPC: A61B6/03 ,  H01J35/06

CPC classification number: A61B6/032 ,  A61B6/4021 ,  H01J35/04 ,  H01J35/06 ,  H01J35/14 ,  H01J35/30 ,  H01J2235/06 ,  H05G1/52

Abstract: An X-ray tube includes: a Wehnelt electrode having a dent inside; a filament arranged in the dent of the Wehnelt electrode and configured to emit an electron beam when electricity is passed therethrough; an anode configured to emit an X-ray in response to the incident electron beam; an electrode part configured by at least one pair of electrode members, the electrode members facing each other across a path of the electron beam, a voltage being applied to each of the electrode members; a voltage controller configured to control the voltage applied to the electrode part; and a shield member arranged in contact with the Wehnelt electrode and configured to cover part of the dent by a projecting part.

Abstract translation: X射线管包括：具有凹陷的Wehnelt电极; 布置在Wehnelt电极的凹陷中并构造成当电流通过时发射电子束的灯丝; 配置为响应于入射电子束发射X射线的阳极; 电极部件，由至少一对电极部件构成，所述电极部件跨越所述电子束的路径彼此面对，对每个所述电极部件施加电压; 电压控制器，被配置为控制施加到所述电极部分的电压; 以及屏蔽构件，其布置成与所述Wehnelt电极接触并且构造成通过突出部覆盖所述凹陷的一部分。

公开(公告)号：US20110002443A1

公开(公告)日：2011-01-06

申请号：US12882005

申请日：2010-09-14

Applicant: Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

Inventor： Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

IPC: G01N23/06 ,  H01J35/02

CPC classification number: H01J35/06 ,  H01J35/14 ,  H01J2235/0233 ,  H01J2235/06 ,  H01J2235/163 ,  H05G1/02 ,  H05G1/10

Abstract: An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.

Abstract translation: 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV及更高能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。

公开(公告)号：US20100067664A1

公开(公告)日：2010-03-18

申请号：US12513364

申请日：2006-11-21

Applicant: Tomomi Tamura ,  Takumi Kobayashi

Inventor： Tomomi Tamura ,  Takumi Kobayashi

IPC: H01J35/04 ,  H01J35/18

CPC classification number: H01J35/04 ,  H01J35/06 ,  H01J35/14 ,  H01J2235/06 ,  H01J2235/186

Abstract: According to the X-ray generating apparatus of this invention, a potential corresponding to that of a housing is applied to a first electrode, closest to a cathode, of at least two intermediate electrodes arranged between the cathode and a target. Therefore, even if the first electrode with an increased thermal capacity contacts the housing, the function of the X-ray generating apparatus will never be impaired. As a result, the first electrode is not easily restricted by structure, so that the first electrode may be enlarged as a measure for heat radiation, or that the first electrode may be placed in contact with the housing. The first electrode contacting the housing determines a positional relationship of the electron gun and housing to facilitate assembly of the X-ray generating apparatus. Further, all the potentials of the cathode, intermediate electrodes (e.g. a second electrode and a third electrode) and target will have straight polarity with respect to the potential of the first electrode, which facilitates power source control.

Abstract translation: 根据本发明的X射线产生装置，将与壳体相对应的电位施加到最靠近阴极的位于阴极和靶之间的至少两个中间电极的第一电极。 因此，即使具有增加的热容量的第一电极与壳体接触，也不会损害X射线产生装置的功能。 结果，第一电极不容易受到结构的限制，从而第一电极可以作为散热的措施而被扩大，或者第一电极可以被放置成与壳体接触。 接触壳体的第一电极确定电子枪和壳体的位置关系，以便于X射线产生装置的组装。 此外，阴极，中间电极（例如第二电极和第三电极）和靶的所有电位相对于第一电极的电位具有直的极性，这有利于电源的控制。

公开(公告)号：US20100040201A1

公开(公告)日：2010-02-18

申请号：US12192001

申请日：2008-08-14

Applicant: David S.K. Lee

Inventor： David S.K. Lee

IPC: H01J35/06 ,  H01J9/00

CPC classification number: H01J35/06 ,  H01J35/14 ,  H01J2235/06

Abstract: One or more components of an x-ray cathode assembly are manufactured using a metal deposition process. The deposition process is carried out by providing a cathode shield and a cathode head with a cathode cup and a filament slot fabricated from a first metal, and forming a coating comprising a second metal on at least a portion of at least one of the filament slot, cathode cup, cathode head, and/or cathode shield using a deposition process so as to yield the x-ray cathode assembly. The deposition process is continued until a desired thickness of metal is achieved. Example deposition processes include electroforming, chemical vapor deposition, physical vapor deposition, plasma spray, high velocity oxygen fuel thermal spray, and detonation thermal spraying.

Abstract translation: 使用金属沉积工艺制造x射线阴极组件的一个或多个部件。 沉积工艺是通过提供具有由第一金属制成的阴极杯和灯丝槽的阴极屏蔽和阴极头，并且在至少一个灯丝槽中的至少一部分上形成包括第二金属的涂层 ，阴极杯，阴极头和/或阴极罩，使用沉积工艺以产生x射线阴极组件。 继续沉积过程，直至实现所需的金属厚度。 实例沉积工艺包括电铸，化学气相沉积，物理气相沉积，等离子喷涂，高速氧燃料热喷涂和爆轰热喷涂。

公开(公告)号：US20090225949A1

公开(公告)日：2009-09-10

申请号：US12468897

申请日：2009-05-20

Applicant: Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

Inventor： Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

IPC: G01B15/02 ,  H05G1/10

CPC classification number: H01J35/06 ,  H01J35/14 ,  H01J2235/0233 ,  H01J2235/06 ,  H01J2235/163 ,  H05G1/02 ,  H05G1/10

Abstract: An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.

Abstract translation: 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV以上能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器通过地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。