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公开(公告)号：US20150287565A1
公开(公告)日：2015-10-08
申请号：US14437491
申请日：2012-10-22
Applicant: SHIMADZU CORPORATION
Inventor： Sadamu Tomita , Masaaki Ukita
CPC classification number: H01J35/14 , H01J35/16 , H01J35/305 , H01J2235/02 , H01J2235/16 , H01J2235/168
Abstract: An X-ray tube device according to the present invention includes a cathode generating an electron beam, an anode generating an X-ray by collision of the electron beam from the cathode, an envelope internally housing the cathode and the anode, a magnetic field generator including a magnetic pole arranged to be opposed to the envelope, generating a magnetic field for focusing and deflecting the electron beam from the cathode to the anode, and an electric field relaxing electrode arranged between the magnetic pole and the envelope, having an outer surface having a rounded shape. Thus, the magnetic field generator can be placed closer to the envelope while a tip end of the magnetic field generator is suppressed from being a discharge start point, and hence the effect of being capable of downsizing the X-ray tube device is achieved.
Abstract translation: 根据本发明的X射线管装置包括产生电子束的阴极，通过来自阴极的电子束的碰撞产生X射线的阳极，内部容纳阴极和阳极的外壳，磁场发生器 包括设置成与外壳相对的磁极，产生用于使电子束从阴极到阳极聚焦和偏转的磁场，以及布置在磁极和外壳之间的电场弛豫电极，其外表面具有 圆形。 因此，可以将磁场发生器放置得更靠近封套，同时将磁场发生器的前端抑制为放电开始点，从而实现能够使X射线管装置小型化的效果。
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公开(公告)号：US10121628B2
公开(公告)日：2018-11-06
申请号：US15365052
申请日：2016-11-30
Applicant: SHIMADZU CORPORATION
Inventor： Yusuke Koga , Sadamu Tomita , Takumi Kobayashi
Abstract: An emitter for an X-ray tube device is configured to irradiate an anode with electrons for X-ray emission. The emitter includes an electron emission portion to be heated by an electric current, a current application leg for supplying the electric current to the electron emission portion, a support leg, a current application leg fixing portion for supporting the current application leg and supplying the electric current to the current application leg, and a support leg fixing portion for supporting the support leg. At least one of materials and shapes are different between the current application leg fixing portion and the support leg fixing portion so that a difference in an amount of thermal deformation between the current application leg and the support leg in a direction vertical to the electron emission portion is reduced when the electron emission portion is heated.
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公开(公告)号：US09826613B2
公开(公告)日：2017-11-21
申请号：US14896082
申请日：2013-07-09
Applicant: Shimadzu Corporation
Inventor： Sadamu Tomita
Abstract: An X-ray tube assembly for generating an X-ray, comprises: a filament including a plurality of electric flow paths; and an adjustor configured to adjust at least one of values of current flowing through the plurality of electric flow paths to adjust an electron emission area of the filament.
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公开(公告)号：US09437390B2
公开(公告)日：2016-09-06
申请号：US14437491
申请日：2012-10-22
Applicant: SHIMADZU CORPORATION
Inventor： Sadamu Tomita , Masaaki Ukita
CPC classification number: H01J35/14 , H01J35/16 , H01J35/305 , H01J2235/02 , H01J2235/16 , H01J2235/168
Abstract: An X-ray tube device according to the present invention includes a cathode generating an electron beam, an anode generating an X-ray by collision of the electron beam from the cathode, an envelope internally housing the cathode and the anode, a magnetic field generator including a magnetic pole arranged to be opposed to the envelope, generating a magnetic field for focusing and deflecting the electron beam from the cathode to the anode, and an electric field relaxing electrode arranged between the magnetic pole and the envelope, having an outer surface having a rounded shape. Thus, the magnetic field generator can be placed closer to the envelope while a tip end of the magnetic field generator is suppressed from being a discharge start point, and hence the effect of being capable of downsizing the X-ray tube device is achieved.
Abstract translation: 根据本发明的X射线管装置包括产生电子束的阴极，通过来自阴极的电子束的碰撞产生X射线的阳极，内部容纳阴极和阳极的外壳，磁场发生器 包括设置成与外壳相对的磁极，产生用于使电子束从阴极到阳极聚焦和偏转的磁场，以及布置在磁极和外壳之间的电场弛豫电极，其外表面具有 圆形。 因此，可以将磁场发生器放置得更靠近封套，同时将磁场发生器的前端抑制为放电开始点，从而实现能够使X射线管装置小型化的效果。
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