JPS5537715A - Cathode ray tube electron gun - Google Patents
Cathode ray tube electron gunInfo
- Publication number
- JPS5537715A JPS5537715A JP10963978A JP10963978A JPS5537715A JP S5537715 A JPS5537715 A JP S5537715A JP 10963978 A JP10963978 A JP 10963978A JP 10963978 A JP10963978 A JP 10963978A JP S5537715 A JPS5537715 A JP S5537715A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- electron beam
- cylindrical
- permanent magnets
- yokes
- 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 prevent drifting phenomena of an electron beam and to devise an improvement of a convergence shifting by surrounding an electromagnetic focusing space of an electron beam with a magnetic shielding body made of a high conductive material.
CONSTITUTION: In an electromagnetic focusing space between magnetic yokes 5 installed oppositely facing, a magnetic shield 13 formed as a cylindrical shape with a conductive magnetic body such as for example permalloid is provided so as to surround an entity of cylindrical magnet bodies 8 and permanent magnets 9. By making in this manner, the magnetic shield 13 is together with forming a parallel magnetic branch route for a magnetic circuit consisting of magnetic yokes 5, cylindrical magnetic bodies 8 and their intermediate gaps and also shielding a leakage flux from side surfaces of permanent magnets 9, omitting a leakage to a deflecting magnetic field and a magnetic circuit of high accuracy can be formed. Also an electrical field due to a charged potential upon an insulator surface is shielded and a drifting of an electron beam can be prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10963978A JPS6048858B2 (en) | 1978-09-08 | 1978-09-08 | cathode ray tube electron gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10963978A JPS6048858B2 (en) | 1978-09-08 | 1978-09-08 | cathode ray tube electron gun |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5537715A true JPS5537715A (en) | 1980-03-15 |
JPS6048858B2 JPS6048858B2 (en) | 1985-10-29 |
Family
ID=14515376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10963978A Expired JPS6048858B2 (en) | 1978-09-08 | 1978-09-08 | cathode ray tube electron gun |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6048858B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4460844A (en) * | 1980-12-15 | 1984-07-17 | Hitachi, Ltd. | Magnetic focusing, three in-line gun type color picture tube |
US4495439A (en) * | 1981-09-02 | 1985-01-22 | Tokyo Shibaura Denki Kabushiki Kaisha | Magnetic focusing type cathode ray tube |
JPH0897718A (en) * | 1983-08-05 | 1996-04-12 | Advanced Micro Devices Inc | Interrupt enabled voltage controlled oscillator and phase locked loop using it |
-
1978
- 1978-09-08 JP JP10963978A patent/JPS6048858B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4460844A (en) * | 1980-12-15 | 1984-07-17 | Hitachi, Ltd. | Magnetic focusing, three in-line gun type color picture tube |
US4495439A (en) * | 1981-09-02 | 1985-01-22 | Tokyo Shibaura Denki Kabushiki Kaisha | Magnetic focusing type cathode ray tube |
JPH0897718A (en) * | 1983-08-05 | 1996-04-12 | Advanced Micro Devices Inc | Interrupt enabled voltage controlled oscillator and phase locked loop using it |
Also Published As
Publication number | Publication date |
---|---|
JPS6048858B2 (en) | 1985-10-29 |
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