JPS5535419A - Electron gun - Google Patents
Electron gunInfo
- Publication number
- JPS5535419A JPS5535419A JP10790278A JP10790278A JPS5535419A JP S5535419 A JPS5535419 A JP S5535419A JP 10790278 A JP10790278 A JP 10790278A JP 10790278 A JP10790278 A JP 10790278A JP S5535419 A JPS5535419 A JP S5535419A
- Authority
- JP
- Japan
- Prior art keywords
- control electrode
- current control
- anode
- diameter
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To form a crossover part of a high current density on an aperture by forming the diameter of a hold on a cathode current control electrode provided over a cathode equal to the distance between the cathode current control electrode and an anode.
CONSTITUTION: Anode 3 being a flat plate electrode in stead of being a double structure electrode, the diameter of a cathode current control electrode 2 is equal to the distance between the cathode current control electrode 2 and the anode 3, which allows a crossover part 6 of a high current density to be disposed on an aperture 7 so that the quantity and the divergence angle of electron beams 5' are increased. On the other hand, when the diameter of limiting aperture 8 is as small as to sufficiently limit the electrom beam divergence, the divergence angle of electron beams 5 can be reduced and the divergence angle of the current density is made uniform.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10790278A JPS5535419A (en) | 1978-09-01 | 1978-09-01 | Electron gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10790278A JPS5535419A (en) | 1978-09-01 | 1978-09-01 | Electron gun |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5535419A true JPS5535419A (en) | 1980-03-12 |
JPH0332172B2 JPH0332172B2 (en) | 1991-05-10 |
Family
ID=14470958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10790278A Granted JPS5535419A (en) | 1978-09-01 | 1978-09-01 | Electron gun |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5535419A (en) |
-
1978
- 1978-09-01 JP JP10790278A patent/JPS5535419A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0332172B2 (en) | 1991-05-10 |
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