JPS545373A - Projection-type cathode-ray tube - Google Patents

Projection-type cathode-ray tube

Info

Publication number
JPS545373A
JPS545373A JP6981377A JP6981377A JPS545373A JP S545373 A JPS545373 A JP S545373A JP 6981377 A JP6981377 A JP 6981377A JP 6981377 A JP6981377 A JP 6981377A JP S545373 A JPS545373 A JP S545373A
Authority
JP
Japan
Prior art keywords
projection
ray tube
type cathode
system consisting
lens system
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
JP6981377A
Other languages
Japanese (ja)
Inventor
Mitsuru Otake
Masanobu Takada
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 JP6981377A priority Critical patent/JPS545373A/en
Publication of JPS545373A publication Critical patent/JPS545373A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To ensure a focusing of the electron beam onto the fluorescent screen in the best condition by combining the electromagnetic converging lens system consisting of the electromagmet and the elcetromagnetic converging lens system consisting of the permanent magnet and then adjusting these lens systems.
COPYRIGHT: (C)1979,JPO&Japio
JP6981377A 1977-06-15 1977-06-15 Projection-type cathode-ray tube Pending JPS545373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6981377A JPS545373A (en) 1977-06-15 1977-06-15 Projection-type cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6981377A JPS545373A (en) 1977-06-15 1977-06-15 Projection-type cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS545373A true JPS545373A (en) 1979-01-16

Family

ID=13413565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6981377A Pending JPS545373A (en) 1977-06-15 1977-06-15 Projection-type cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS545373A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3145051A1 (en) 1980-11-12 1982-07-15 Hitachi, Ltd., Tokyo MAGNETIC FIELD GENERATOR FOR CATHODE RAY TUBES WITH ELECTROMAGNETIC FOCUSING
JPS57145253A (en) * 1981-03-03 1982-09-08 Sanyo Electric Co Ltd Electron beam focusing device of crt
JPS57198854U (en) * 1981-06-12 1982-12-17

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4330441Y1 (en) * 1965-02-01 1968-12-12
JPS5032565A (en) * 1973-07-26 1975-03-29

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4330441Y1 (en) * 1965-02-01 1968-12-12
JPS5032565A (en) * 1973-07-26 1975-03-29

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3145051A1 (en) 1980-11-12 1982-07-15 Hitachi, Ltd., Tokyo MAGNETIC FIELD GENERATOR FOR CATHODE RAY TUBES WITH ELECTROMAGNETIC FOCUSING
JPS57145253A (en) * 1981-03-03 1982-09-08 Sanyo Electric Co Ltd Electron beam focusing device of crt
JPS57198854U (en) * 1981-06-12 1982-12-17

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