JPS54561A - Cathode ray tube of projection type - Google Patents

Cathode ray tube of projection type

Info

Publication number
JPS54561A
JPS54561A JP6479777A JP6479777A JPS54561A JP S54561 A JPS54561 A JP S54561A JP 6479777 A JP6479777 A JP 6479777A JP 6479777 A JP6479777 A JP 6479777A JP S54561 A JPS54561 A JP S54561A
Authority
JP
Japan
Prior art keywords
ray tube
cathode ray
projection type
lens system
focusing lens
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.)
Granted
Application number
JP6479777A
Other languages
Japanese (ja)
Other versions
JPH0253905B2 (en
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 JP6479777A priority Critical patent/JPS54561A/en
Publication of JPS54561A publication Critical patent/JPS54561A/en
Publication of JPH0253905B2 publication Critical patent/JPH0253905B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE: To remarkably increase the luminance and picture quality, by obtaining stable forcus performance and fine beam spot diameter, through adjusting electrostatic focusing lens system and electromagnetic focusing lens system.
COPYRIGHT: (C)1979,JPO&Japio
JP6479777A 1977-06-03 1977-06-03 Cathode ray tube of projection type Granted JPS54561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6479777A JPS54561A (en) 1977-06-03 1977-06-03 Cathode ray tube of projection type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6479777A JPS54561A (en) 1977-06-03 1977-06-03 Cathode ray tube of projection type

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP15235389A Division JPH02223137A (en) 1989-06-16 1989-06-16 Projection type cathode-ray tube

Publications (2)

Publication Number Publication Date
JPS54561A true JPS54561A (en) 1979-01-05
JPH0253905B2 JPH0253905B2 (en) 1990-11-20

Family

ID=13268576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6479777A Granted JPS54561A (en) 1977-06-03 1977-06-03 Cathode ray tube of projection type

Country Status (1)

Country Link
JP (1) JPS54561A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553051A (en) * 1983-07-18 1985-11-12 Texas Instruments Incorporated PMOS Input buffer compatible with logic inputs from an NMOS microprocessor
JPH02223137A (en) * 1989-06-16 1990-09-05 Hitachi Ltd Projection type cathode-ray tube
US5386252A (en) * 1991-08-27 1995-01-31 Hitachi, Ltd. Projection system and display apparatus for compressing and expanding aspect ratio of a picture

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173380A (en) * 1974-12-21 1976-06-25 Tokyo Shibaura Electric Co INKYOKUSEN KANSOCHI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173380A (en) * 1974-12-21 1976-06-25 Tokyo Shibaura Electric Co INKYOKUSEN KANSOCHI

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553051A (en) * 1983-07-18 1985-11-12 Texas Instruments Incorporated PMOS Input buffer compatible with logic inputs from an NMOS microprocessor
JPH02223137A (en) * 1989-06-16 1990-09-05 Hitachi Ltd Projection type cathode-ray tube
JPH0470731B2 (en) * 1989-06-16 1992-11-11 Hitachi Ltd
US5386252A (en) * 1991-08-27 1995-01-31 Hitachi, Ltd. Projection system and display apparatus for compressing and expanding aspect ratio of a picture

Also Published As

Publication number Publication date
JPH0253905B2 (en) 1990-11-20

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