JPS5318916A - Cathode-ray tube - Google Patents

Cathode-ray tube

Info

Publication number
JPS5318916A
JPS5318916A JP9278176A JP9278176A JPS5318916A JP S5318916 A JPS5318916 A JP S5318916A JP 9278176 A JP9278176 A JP 9278176A JP 9278176 A JP9278176 A JP 9278176A JP S5318916 A JPS5318916 A JP S5318916A
Authority
JP
Japan
Prior art keywords
cathode
ray tube
spot
secure
magnetic field
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
JP9278176A
Other languages
Japanese (ja)
Inventor
Takuo Koyama
Kyohei Fukuda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9278176A priority Critical patent/JPS5318916A/en
Publication of JPS5318916A publication Critical patent/JPS5318916A/en
Pending legal-status Critical Current

Links

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE: To increase the picture quality by providing a 4-pole lens and increasing the focal distance in the vertical direction at the point when an electronic beam enters the deflection magnetic field in order to secure a small round beam spot with reduced spot distortion.
COPYRIGHT: (C)1978,JPO&Japio
JP9278176A 1976-08-05 1976-08-05 Cathode-ray tube Pending JPS5318916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9278176A JPS5318916A (en) 1976-08-05 1976-08-05 Cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9278176A JPS5318916A (en) 1976-08-05 1976-08-05 Cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS5318916A true JPS5318916A (en) 1978-02-21

Family

ID=14063948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9278176A Pending JPS5318916A (en) 1976-08-05 1976-08-05 Cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS5318916A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134966A (en) * 1978-04-12 1979-10-19 Hitachi Ltd Cathode-ray tube electron gun
JPS5591539A (en) * 1978-12-27 1980-07-11 Philips Nv Cathode ray tube
JPS59101745A (en) * 1982-12-02 1984-06-12 Toshiba Corp Color picture tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134966A (en) * 1978-04-12 1979-10-19 Hitachi Ltd Cathode-ray tube electron gun
JPS5591539A (en) * 1978-12-27 1980-07-11 Philips Nv Cathode ray tube
JPS6340349B2 (en) * 1978-12-27 1988-08-10 Fuiritsupusu Furuuiranpenfuaburiken Nv
JPS59101745A (en) * 1982-12-02 1984-06-12 Toshiba Corp Color picture tube

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