公开(公告)号：US3731095A

公开(公告)日：1973-05-01

申请号：US3731095D

申请日：1971-04-01

Applicant: HITACHI LTD

Inventor： KOMODA T

IPC: H01J37/073 ,  H01J37/26

CPC classification number: H01J37/073

Abstract: In an electron gun device of the field emission type, a shield electrode whose potential is the same as that of a cathode-tip of needle shape is disposed in surrounding relationship to a first anode so as to shield said first anode from ground potential portions of the device, such as the envelope, so that discharge between the anode and the ground potential portions is prevented, whereby the needle tip of the cathode is protected from destruction due to said discharge.

Abstract translation: 在场致发射型的电子枪装置中，与第一阳极的围绕关系设置有与针状阴极尖端相同的电位的屏蔽电极，以将第一阳极与地电位部分 该装置，例如外壳，从而防止阳极和地电位部分之间的放电，从而防止阴极的针尖因所述放电而被破坏。

公开(公告)号：US3846663A

公开(公告)日：1974-11-05

申请号：US18204171

申请日：1971-09-20

Applicant: HITACHI LTD

Inventor： KOMODA T

IPC: G01Q30/02 ,  G01Q70/08 ,  H01J37/073 ,  H01J29/02 ,  H01J29/52

CPC classification number: H01J37/073

Abstract: In an electron gun device of the field emission type, a suppression electrode having a potential which is higher than that of the anode is disposed between a cathode tip of needle shape and said anode so that passage through said suppression electrode of ions emitted from said anode by means of electron impingement thereon is prevented, whereby the needle tip of the cathode is protected from destruction due to ion impingement thereon.

Abstract translation: 在场致发射型的电子枪装置中，具有比阳极高的电位的抑制电极设置在针状阴极尖端与所述阳极之间，使得从所述阳极发射的离子通过所述抑制电极 通过其上的电子冲击被防止，从而保护阴极的针尖免受其上的离子冲击的破坏。

公开(公告)号：US3786305A

公开(公告)日：1974-01-15

申请号：US25324572

申请日：1972-05-15

Applicant: HITACHI LTD

Inventor： KOMODA T ,  NOMURA S

IPC: H01J37/073 ,  H01J37/24 ,  H01J29/70

CPC classification number: H01J37/243 ,  H01J37/073

Abstract: In an electron gun device of the field emission type having a cathode tip, and first and second anodes connected to responsive voltage sources, a control electrode connected to a control voltage source is disposed in the neighborhood of the cathode tip so as to control the electron beam emitted from the cathode tip whereby a stable electron beam can be obtained.

Abstract translation: 在具有阴极尖端的场发射型电子枪装置中，连接有响应电压源的第一和第二阳极，连接到控制电压源的控制电极设置在阴极尖端附近，以控制电子 从阴极尖端发射的光束可以获得稳定的电子束。

公开(公告)号：US3775630A

公开(公告)日：1973-11-27

申请号：US3775630D

申请日：1972-07-18

Applicant: HITACHI LTD

Inventor： MINAMIKAWA Y ,  KOMODA T

IPC: H01J3/02 ,  H01J1/42

CPC classification number: H01J3/021

Abstract: An electron gun device of the field emission type comprising an electron emitting cathode tip, a filament for heating the cathode tip, an anode, and a charged particle emitting electrode, in which charged particles are emitted from the electrode and bombard the anode surface to outgas the anode.

Abstract translation: 一种场发射型电子枪装置，包括电子发射阴极尖端，用于加热阴极尖端的灯丝，阳极和带电粒子发射电极，其中带电粒子从电极发射并轰击阳极表面以排出气体 阳极。