JPS6448355A - Electron gun - Google Patents
Electron gunInfo
- Publication number
- JPS6448355A JPS6448355A JP20311387A JP20311387A JPS6448355A JP S6448355 A JPS6448355 A JP S6448355A JP 20311387 A JP20311387 A JP 20311387A JP 20311387 A JP20311387 A JP 20311387A JP S6448355 A JPS6448355 A JP S6448355A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- quadrupole
- focusing
- resolution
- electron beam
- 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
Abstract
PURPOSE:To improve the extent of resolution in a faceplate peripheral part without deteriorating the resolution in a faceplate central part at a small current area by installing a device, strongly focusing an electron beam in the horizontal direction, in a first quadrupole lens of a pre-focus lens part, and also installing another device, strongly focusing the electron beam in the vertical direction, in a second quadrupole lens of a main lens mart. CONSTITUTION:This electron gun has a triple pole part, a pre-focus lens part and a main lens part, the prefocus lens part forms a first quadrupole lens 20, the main lens part forms a second quadrupole lens 21, and these first and second quadrupole lenses 20 and 21 are orthogonalized with each other, and in the suchlike electron gun, a device, stringly focusing an electron beam in the horizontal direction, is installed in the first quadrupole lens 20 as well as device, strongly focusing the electron beam in the vertical direction, is installed in the second quadrupole lens 21. With this constitution, utilizing a fact that each focusing action in both these horizontal and vertical directions is different from each other, resolution over the whole faceplate is improvable without deteriorating the resolution in the faceplate central part at a small current area among others.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20311387A JPS6448355A (en) | 1987-08-17 | 1987-08-17 | Electron gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20311387A JPS6448355A (en) | 1987-08-17 | 1987-08-17 | Electron gun |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6448355A true JPS6448355A (en) | 1989-02-22 |
Family
ID=16468615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20311387A Pending JPS6448355A (en) | 1987-08-17 | 1987-08-17 | Electron gun |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6448355A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2683942A1 (en) * | 1991-11-14 | 1993-05-21 | Sony Corp | CATHODE RAY TUBE. |
US6759142B2 (en) | 2001-07-31 | 2004-07-06 | Kobe Steel Ltd. | Plated copper alloy material and process for production thereof |
-
1987
- 1987-08-17 JP JP20311387A patent/JPS6448355A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2683942A1 (en) * | 1991-11-14 | 1993-05-21 | Sony Corp | CATHODE RAY TUBE. |
US6759142B2 (en) | 2001-07-31 | 2004-07-06 | Kobe Steel Ltd. | Plated copper alloy material and process for production thereof |
US6939621B2 (en) | 2001-07-31 | 2005-09-06 | Kobe Steel, Ltd. | Plated copper alloy material and process for production thereof |
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