JPS554850A - Electron gun - Google Patents
Electron gunInfo
- Publication number
- JPS554850A JPS554850A JP7790078A JP7790078A JPS554850A JP S554850 A JPS554850 A JP S554850A JP 7790078 A JP7790078 A JP 7790078A JP 7790078 A JP7790078 A JP 7790078A JP S554850 A JPS554850 A JP S554850A
- Authority
- JP
- Japan
- Prior art keywords
- length
- ranges
- grid
- setting
- focus voltage
- 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 obtain pictures that have high resolution and high sharpness, by setting the dimensions of each electrode forming electron lenses within specified prescribed ranges.
CONSTITUTION: The length L5 of the fifth grid 5 is set within ranges decided in accordance with an expression I that the spherical aberration of uni-potential type electron lenses formed at the fourthWthe sixth grids 4W6 becomes smaller and can lower focus voltage Ef as much as possible. The length L6 of the sixth grid 6 can freely be set comparatively, but it is set in approximate extent that satisfies L6/D≥1 in order to prevent effect to the electric fields of lens ranges from the screen side. The length L4 of the fourth grid 4 is set so that L4≤L3<L5 be formed in Ef/Eb≤ 0.33 in response to a focus voltage ratio Ef/Eb. Thus, pictures that have high resolution and high sharpness can be obtained by setting the length of each electrode within prescribed ranges.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7790078A JPS554850A (en) | 1978-06-26 | 1978-06-26 | Electron gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7790078A JPS554850A (en) | 1978-06-26 | 1978-06-26 | Electron gun |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS554850A true JPS554850A (en) | 1980-01-14 |
JPH029427B2 JPH029427B2 (en) | 1990-03-01 |
Family
ID=13646942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7790078A Granted JPS554850A (en) | 1978-06-26 | 1978-06-26 | Electron gun |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS554850A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5577503U (en) * | 1978-11-15 | 1980-05-28 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5075360A (en) * | 1973-11-05 | 1975-06-20 | ||
JPS5075359A (en) * | 1973-11-05 | 1975-06-20 |
-
1978
- 1978-06-26 JP JP7790078A patent/JPS554850A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5075360A (en) * | 1973-11-05 | 1975-06-20 | ||
JPS5075359A (en) * | 1973-11-05 | 1975-06-20 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5577503U (en) * | 1978-11-15 | 1980-05-28 | ||
JPS57961Y2 (en) * | 1978-11-15 | 1982-01-08 |
Also Published As
Publication number | Publication date |
---|---|
JPH029427B2 (en) | 1990-03-01 |
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