JPS5697949A - Electron gun - Google Patents
Electron gunInfo
- Publication number
- JPS5697949A JPS5697949A JP53680A JP53680A JPS5697949A JP S5697949 A JPS5697949 A JP S5697949A JP 53680 A JP53680 A JP 53680A JP 53680 A JP53680 A JP 53680A JP S5697949 A JPS5697949 A JP S5697949A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- sections
- cylindrical thru
- thru
- cylindrical
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/62—Electrostatic lenses
- H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
- H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
Abstract
PURPOSE:To obtain a large electrostatic lens and improve the assembly accuracy of an electron gun, by drilling the cylindrical thru-hole on an electrode forming a principal lens, as well as on a member with a specified length in the axial direction of an electron beam, and extending the inner wall section of the cylindrical thru-hole to the specified length. CONSTITUTION:The three partitioning sections 55 and 56 of every cylindrical thru- hole sections 52, 53, and 54 on a horizontal axis X2-X2' which contains the central axes 52Z, 53Z, and 54Z of the cylindrical thru-hole sections 52, 53, and 54 in parallel to the axial direction of each electron beam of an electrode element 442 is formed into narrow rectangles consisting of a pair of long sides in parallel to the central axes 52Z, 53Z, and 54Z and their vertical short sides and the inner wall section including their partitioning sections 55 and 56 is extended into the same length as that 60 of the electrode element. This can increase the diameter of the respective cylindrical thru-hole sections 52, 53, and 54 and form a large electrostatic lens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53680A JPS5697949A (en) | 1980-01-09 | 1980-01-09 | Electron gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53680A JPS5697949A (en) | 1980-01-09 | 1980-01-09 | Electron gun |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5697949A true JPS5697949A (en) | 1981-08-07 |
Family
ID=11476472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53680A Pending JPS5697949A (en) | 1980-01-09 | 1980-01-09 | Electron gun |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5697949A (en) |
-
1980
- 1980-01-09 JP JP53680A patent/JPS5697949A/en active Pending
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