JPS5519747A - Cathode ray tube electron gun - Google Patents
Cathode ray tube electron gunInfo
- Publication number
- JPS5519747A JPS5519747A JP9262778A JP9262778A JPS5519747A JP S5519747 A JPS5519747 A JP S5519747A JP 9262778 A JP9262778 A JP 9262778A JP 9262778 A JP9262778 A JP 9262778A JP S5519747 A JPS5519747 A JP S5519747A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- permanent magnet
- shield
- magnetic yoke
- ray tube
- 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 suppress unfavorable action caused by the leakage flux from permanent magnet, by covering the surface along the electron beam path of permanent magnet with soft ferro-magnetic board the end of which is placed in the proximity of magnetic yoke.
CONSTITUTION: Magnetic shield 13 comprised of soft ferro-mangetic board covers the surface of permanent magnet 9 and the end is placed in the proximity of magnetic yoke 5. The electron group discharged from the cathode 2 is controlled by first and second grids to produce the electron beam which enters into the through-hole in the magnetic yoke 5. The magnetic shield 13 forms parallel magnetic shunt for the magnetic circuit comprising magnetic yoke 5, magnetic cylinder 8 and an intermediate gap, to shield the leakage flux from the side of permanent magnet 9.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9262778A JPS5519747A (en) | 1978-07-31 | 1978-07-31 | Cathode ray tube electron gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9262778A JPS5519747A (en) | 1978-07-31 | 1978-07-31 | Cathode ray tube electron gun |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5519747A true JPS5519747A (en) | 1980-02-12 |
JPS618537B2 JPS618537B2 (en) | 1986-03-14 |
Family
ID=14059673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9262778A Granted JPS5519747A (en) | 1978-07-31 | 1978-07-31 | Cathode ray tube electron gun |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5519747A (en) |
-
1978
- 1978-07-31 JP JP9262778A patent/JPS5519747A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS618537B2 (en) | 1986-03-14 |
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