JPS5853461U

JPS5853461U - electron gun

Info

Publication number: JPS5853461U
Application number: JP14923681U
Authority: JP
Inventors: 雅明高橋
Original assignee: 日本電気株式会社
Priority date: 1981-10-07
Filing date: 1981-10-07
Publication date: 1983-04-11

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は新調スタック形電子銃の従来例の断面図、第２
図はスタック形電子銃の別の従来例の断面図、第３図は
本考案の実施例の縦断面図と横断面図、第４図はセラミ
ック円筒１３の縦断面図と横断面図、第５図は加速電極
４″、電子ビーム形成電極・３′、陰極１″の平面図、
第６図はセラミック棒１７の断面図と側面図である。１
．１’。１″・・・・・・陰極、２．２’、２″・・・・・・電
子ビーム軌道、３．３’、３″・・・・・・電子ビーム
形成電極、４゜４′、４“・・・・・・加速電極、５・
・・・・・ヒータ、６，７゜８、　９．　１２．　１３
・・・・・・セラミック円筒、１０゜１１・・・・・・
封入皿、１４，１５．１６・・・・・・金属線、１７・
・・・・・セラミック棒。Figure 1 is a sectional view of a conventional example of a new stack type electron gun, Figure 2
3 is a longitudinal sectional view and a cross sectional view of an embodiment of the present invention. FIG. 4 is a longitudinal sectional view and a transverse sectional view of a ceramic cylinder 13. Figure 5 is a plan view of accelerating electrode 4'', electron beam forming electrode 3', and cathode 1''.
FIG. 6 is a cross-sectional view and a side view of the ceramic rod 17. 1
．． 1'. 1''... cathode, 2.2', 2''... electron beam trajectory, 3.3', 3''... electron beam forming electrode, 4°4', 4"...Acceleration electrode, 5.
...Heater, 6,7°8, 9. 12. 13
...Ceramic cylinder, 10°11...
Enclosure dish, 14, 15. 16...Metal wire, 17.
...Ceramic rod.

Claims

[Scope of utility model registration request]

In the electron gun, the electron gun has at least a cathode that emits electrons, an electron beam forming electrode that focuses the electrons, and an acceleration electrode that accelerates the electrons by applying a positive potential with respect to the potential of the cathode. The inner surface of the ceramic cylinder that fixes each electrode and also serves as a vacuum envelope has grooves along the circumference of the same number as the electrodes, and 18 grooves along the central axis of the ceramic cylinder.
It has two grooves facing each other with an interval of 0°, and the outer periphery of each electrode has two parallel straight lines and two grooves facing each other at a position of 90° with respect to the straight line. 1. An electron gun comprising a flat plate surrounded by a circular arc, the circular arc portion on the outer periphery of each electrode fitting into a groove along the circumferential direction of the ceramic cylinder.