公开(公告)号：US20140203183A1

公开(公告)日：2014-07-24

申请号：US14155207

申请日：2014-01-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazuhiro Sando ,  Noritaka Ukiyo ,  Yasue Sato ,  Yoshihiro Yanagisawa

IPC: H01J35/08 ,  G01N23/04

CPC classification number: H01J35/08 ,  H01J35/18 ,  H01J2235/087 ,  H01J2235/165 ,  H01J2235/186

Abstract: A radiation generating tube includes an electron emitting source configured to emit an electron beam; a target configured to generate radiation when the target is irradiated with the electron beam; a rear shield body having a tube-shaped electron passage with openings thereof at each end of the passage, and being located at the side of the electron emitting source with respect to the target, a first opening of the passage facing the electron emitting source and being separated from the electron emitting source, a second opening of the passage facing the target; and a brazing material joining the rear shield body with a peripheral edge of the target, at a position separated from the second opening. A closed space isolated from the electron passage is provided between the target and the rear shield body.

Abstract translation: 辐射发生管包括被配置为发射电子束的电子发射源; 被配置为当靶被电子束照射时产生辐射的目标; 后屏蔽体，其具有在通道的每个端部处具有开口的管状电子通道，并且相对于靶位于电子发射源的侧面，面向电子发射源的通道的第一开口和 与电子发射源分离，面向目标的通道的第二开口; 以及在与所述第二开口分离的位置处将所述后屏蔽体与所述靶的周缘连接的钎焊材料。 在目标和后屏蔽体之间设置与电子通道分离的封闭空间。

公开(公告)号：US09818571B2

公开(公告)日：2017-11-14

申请号：US14950570

申请日：2015-11-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takashi Shiozawa ,  Kazuya Tsujino ,  Koichi Tsunoda ,  Nobuhiro Ito ,  Kazuhiro Sando ,  Yoichi Ikarashi

IPC: H01J35/08 ,  H01J35/16 ,  H01J35/06 ,  H01J35/14 ,  H05G1/10

CPC classification number: H01J35/08 ,  H01J35/06 ,  H01J35/14 ,  H01J35/16 ,  H01J2235/087 ,  H01J2235/088 ,  H01J2235/168 ,  H05G1/10

Abstract: An X-ray generation tube includes: an anode including a target configured to generate X-rays under irradiation of electrons, and an anode member electrically connected to the target; a cathode including an electron emitting source configured to emit an electron beam in a direction towards the target, and a cathode member electrically connected to the electron emitting source; and an insulating tube extending between the anode member and the cathode member. The anode further includes an inner circumferential anode layer electrically connected to the anode member, the inner circumferential anode layer extending along an inner circumferential face of the insulating tube, and is remote from the cathode member.

公开(公告)号：US09401259B2

公开(公告)日：2016-07-26

申请号：US14293493

申请日：2014-06-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： Noritaka Ukiyo ,  Yasue Sato ,  Yoshihiro Yanagisawa ,  Kazuhiro Sando

IPC: H01J19/42 ,  H01J35/16 ,  G21G4/08 ,  H05G1/04 ,  H01J37/16 ,  H01J35/08 ,  H01J19/56 ,  H05G1/06

CPC classification number: H01J35/16 ,  G21G4/08 ,  H01J19/42 ,  H01J19/56 ,  H01J35/08 ,  H01J37/16 ,  H01J2229/4827 ,  H01J2229/86 ,  H01J2235/087 ,  H01J2235/16 ,  H01J2235/165 ,  H01J2235/166 ,  H01J2237/16 ,  H05G1/04 ,  H05G1/06

Abstract: Provided is a radiation generating tube in which an insulating tube is prevented from being damaged by heat generation of a target or an electron emitting source during drive. Extending portions extending along an outer periphery of an insulating tube are provided to a cathode and an anode, respectively, and the insulating tube is joined to the extending portions to enhance the strength of joint portions. At the same time, the insulating tube can be deformed easily by setting a tube wall thickness of the insulating tube at a central portion in a longitudinal direction to be smaller than a tube wall thickness of an opening end, and thus the concentration of thermal stress on the joint portions caused by an increase in temperature of the cathode and the anode is alleviated.

Abstract translation: 提供一种辐射发生管，其中防止绝缘管在驱动期间被靶或电子发射源的发热而损坏。 在绝缘管的外周延伸的部分分别设置在阴极和阳极上，并且绝缘管与延伸部分接合以提高接头部分的强度。 同时，通过将绝缘管的长度方向中央部的管壁厚设定为小于开口端的管壁厚度，能够容易地变形绝缘管，因此热应力的集中 在阴极和阳极的温度升高引起的接合部分被减轻。

公开(公告)号：US20160086761A1

公开(公告)日：2016-03-24

申请号：US14958264

申请日：2015-12-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yoshihiro Yanagisawa ,  Yasue Sato ,  Noritaka Ukiyo ,  Kazuhiro Sando

IPC: H01J35/18 ,  H01J35/08 ,  G01N23/04 ,  H01J35/06

CPC classification number: H01J35/18 ,  G01N23/04 ,  H01J35/06 ,  H01J35/08 ,  H01J2235/18 ,  H01J2235/186

Abstract: Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.

Abstract translation: 本发明提供一种通过简单的结构具有耐压特性提高的X射线发生管，该X射线产生管包括连接到绝缘管的一个开口的阴极和连接到另一个开口的阳极，其中电阻膜具有 在绝缘管的外周设置比绝缘管低的电阻值，并且阴极和阳极通过电阻膜彼此电连接。