JPS5613644A - Color cathode-ray tube - Google Patents

Color cathode-ray tube

Info

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
Application number
JP8842079A
Other languages
Japanese (ja)
Inventor
Kazuaki Naiki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8842079A priority Critical patent/JPS5613644A/en
Publication of JPS5613644A publication Critical patent/JPS5613644A/en
Pending legal-status Critical Current

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.
JP8842079A 1979-07-12 1979-07-12 Color cathode-ray tube Pending JPS5613644A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320562B2 (en) * 1974-12-18 1978-06-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320562B2 (en) * 1974-12-18 1978-06-27

Cited By (6)

* Cited by examiner, † Cited by third party
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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