JPS5613644A - Color cathode-ray tube - Google Patents
Color cathode-ray tubeInfo
- Publication number
- JPS5613644A JPS5613644A JP8842079A JP8842079A JPS5613644A JP S5613644 A JPS5613644 A JP S5613644A JP 8842079 A JP8842079 A JP 8842079A JP 8842079 A JP8842079 A JP 8842079A JP S5613644 A JPS5613644 A JP S5613644A
- Authority
- JP
- Japan
- Prior art keywords
- electron
- relative distance
- voltage
- ray tube
- main
- 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
- H01J29/48—Electron guns
- H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
- H01J29/503—Three or more guns, the axes of which lay in a common plane
Abstract
PURPOSE:To raise definition of image by properly disignating the relations between the relative distance of the center of the main electron lens of an electron qun to its both outer electron beams, optimum focusing voltage, and the positive electrode voltage of fluorescent screen. CONSTITUTION:The ratio of the relative distance between the center and both outer electron beams of the main electron lens of an electron gun to the positive electrode voltage EB of fluorescent screen at the optimum focusing voltage VF is set up in the range of 4.73<=VF/EBX100X1/S<=6.25. Thus, the spherical aberration and focusing multiplication of the main electron lens can be made smaller without increasing the relative distance of the three electron beams of inline arrangement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8842079A JPS5613644A (en) | 1979-07-12 | 1979-07-12 | Color cathode-ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8842079A JPS5613644A (en) | 1979-07-12 | 1979-07-12 | Color cathode-ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5613644A true JPS5613644A (en) | 1981-02-10 |
Family
ID=13942283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8842079A Pending JPS5613644A (en) | 1979-07-12 | 1979-07-12 | Color cathode-ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5613644A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5731657A (en) * | 1992-04-21 | 1998-03-24 | Hitachi, Ltd. | Electron gun with cylindrical electrodes arrangement |
US6411026B2 (en) | 1993-04-21 | 2002-06-25 | Hitachi, Ltd. | Color cathode ray tube |
US6448704B1 (en) | 1995-01-09 | 2002-09-10 | Hitachi, Ltd. | Color cathode ray tube having a small neck diameter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5320562B2 (en) * | 1974-12-18 | 1978-06-27 |
-
1979
- 1979-07-12 JP JP8842079A patent/JPS5613644A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5320562B2 (en) * | 1974-12-18 | 1978-06-27 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5731657A (en) * | 1992-04-21 | 1998-03-24 | Hitachi, Ltd. | Electron gun with cylindrical electrodes arrangement |
US5909079A (en) * | 1992-04-21 | 1999-06-01 | Hitachi, Ltd. | Color cathode ray tube |
US5917275A (en) * | 1992-04-21 | 1999-06-29 | Hitachi, Ltd. | Color cathode ray tube |
US6184614B1 (en) | 1992-04-21 | 2001-02-06 | Hitachi, Ltd. | Color cathode ray tube |
US6411026B2 (en) | 1993-04-21 | 2002-06-25 | Hitachi, Ltd. | Color cathode ray tube |
US6448704B1 (en) | 1995-01-09 | 2002-09-10 | Hitachi, Ltd. | Color cathode ray tube having a small neck diameter |
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