公开(公告)号：US10111311B2

公开(公告)日：2018-10-23

申请号：US15454466

申请日：2017-03-09

Applicant: SHIMADZU CORPORATION

Inventor： Yusuke Koga

IPC: H01J35/06 ,  H05G1/56 ,  H05G1/54

Abstract: An emitter that can be lighted even if a line of any part thereof is broken by ensuring an electric pathway. The X-ray tube device includes an electron emission surface P having an electric pathway; electric heating elements 21, 22 that are connected electrically to both ends of said electron emission surface; and two branched terminals that are branched in the middle of the electric pathway of the electron emission surface P between electric heating elements 21 and 22; second electric heating element, in order from the electric heating element 21 as the supporting element 23 and the supporting element 24; and further comprises: a relay 33A that switches the electric heating element 21 and the supporting element 24 to be in a short-circuit/open condition and a relay 33B switches the electric heating element 22 and the supporting element 23 to be in a short-circuit/open condition. A bypass electric pathway may be formed where the short-circuit condition is switched on and such bypass electric pathway can exist at all locations relative to the electric pathway between the electric heating elements 21 and 22.

公开(公告)号：US20160254116A1

公开(公告)日：2016-09-01

申请号：US15032514

申请日：2014-11-19

Applicant: Shimadzu Corporation

Inventor： Masaaki Ukita ,  Takuro Izumi ,  Yusuke Koga

IPC: H01J35/14 ,  H01J35/08 ,  H01J35/06

CPC classification number: H01J35/14 ,  H01J35/04 ,  H01J35/06 ,  H01J35/08

Abstract: A metal including a passivation film 33a with a thickness of 10 nm or more is used as a metal electrode (a focus cup electrode 33) for generating an electric filed in a vacuum. The focus cup electrode 33 is made of stainless steel. The stainless steel is immersed in a treatment solution to perform coating (passivation treatment) . Accordingly, the passivation film 33a can be formed to be thicker than 10 nm. In this manner, the passivation film 33a is thicker than 10 nm. Therefore, the surface is uniform, and the adhesion is excellent, and the number of pinholes is small. Accordingly, the withstand voltage performance can be improved.

Abstract translation: 使用包括厚度为10nm以上的钝化膜33a的金属作为用于在真空中产生电场的金属电极（聚焦杯电极33）。 聚焦杯电极33由不锈钢制成。 将不锈钢浸入处理溶液中以进行涂覆（钝化处理）。 因此，钝化膜33a可以形成为比10nm厚。 以这种方式，钝化膜33a比10nm厚。 因此，表面均匀，粘附性优异，针孔数少。 因此，能够提高耐压性能。

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

IPC: H01J35/06 ,  H01J35/08 ,  H05G1/02

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.