JPS5593641A - Electromagnetic focussing cathode ray tube - Google Patents

Electromagnetic focussing cathode ray tube

Info

Publication number
JPS5593641A
JPS5593641A JP22479A JP22479A JPS5593641A JP S5593641 A JPS5593641 A JP S5593641A JP 22479 A JP22479 A JP 22479A JP 22479 A JP22479 A JP 22479A JP S5593641 A JPS5593641 A JP S5593641A
Authority
JP
Japan
Prior art keywords
magnetic
magnetizing yoke
cylindrical section
magnetic field
magnetizing
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
JP22479A
Other languages
Japanese (ja)
Other versions
JPH0131257B2 (en
Inventor
Kyohei Fukuda
Soichi Sakurai
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 JP22479A priority Critical patent/JPS5593641A/en
Publication of JPS5593641A publication Critical patent/JPS5593641A/en
Publication of JPH0131257B2 publication Critical patent/JPH0131257B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the leak magnetic field from a magnetic circuit consisting of permanent magnets and magnetizing yokes by providing the cylindrical section made of soft and ferro magnetic matreials whose shaft matches the central axis of each electron beam on its thru hole edge of the magnetizing yoke.
CONSTITUTION: The magnetizing yoke 14 consisting of soft and ferro magnetic materials is tightly placed on both magnetic pole surfaces of the permanent magnet 8 so that the disk shaped magnetizing yoke 14a in which the thru holes 7 of the electron beams 9, 10 and 11 are provided inline can match the procession direction of the electron beams 9, 10 and 11. The cylindrical section 14b which is parallel in the axial direction from the circumferential end of the magnetizing yoke 14a and which extends in each separation direction is formed in a body individually. A greater part of the magnetic fields from the permanent magnet 8 is produced as the focussing magnetic field distribution 12 and the leak magnetic field 13 inside the cylindrical section 14b can be reduced sharply.
COPYRIGHT: (C)1980,JPO&Japio
JP22479A 1979-01-08 1979-01-08 Electromagnetic focussing cathode ray tube Granted JPS5593641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22479A JPS5593641A (en) 1979-01-08 1979-01-08 Electromagnetic focussing cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22479A JPS5593641A (en) 1979-01-08 1979-01-08 Electromagnetic focussing cathode ray tube

Publications (2)

Publication Number Publication Date
JPS5593641A true JPS5593641A (en) 1980-07-16
JPH0131257B2 JPH0131257B2 (en) 1989-06-23

Family

ID=11467983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22479A Granted JPS5593641A (en) 1979-01-08 1979-01-08 Electromagnetic focussing cathode ray tube

Country Status (1)

Country Link
JP (1) JPS5593641A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8618514B2 (en) 2002-06-26 2013-12-31 Semequip, Inc. Ion implantation device and a method of semiconductor manufacturing by the implantation of boron hydride cluster ions

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100703121B1 (en) * 2002-06-26 2007-04-05 세미이큅, 인코포레이티드 Method of implanting ions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8618514B2 (en) 2002-06-26 2013-12-31 Semequip, Inc. Ion implantation device and a method of semiconductor manufacturing by the implantation of boron hydride cluster ions

Also Published As

Publication number Publication date
JPH0131257B2 (en) 1989-06-23

Similar Documents

Publication Publication Date Title
GB995269A (en) Permanent magnet device
GB1464039A (en) Electron bearm gun system
US5111494A (en) Magnet for use in a drift tube of an x-ray tube
JPS5593641A (en) Electromagnetic focussing cathode ray tube
GB945610A (en) Velocity modulated discharge devices with magnetic beam focusing
GB1462463A (en) Magnetic structure for focusing of linear beams
JPS5593639A (en) Electromagnetic focussing cathode ray tube
GB739068A (en) Improvements in or relating to cathode ray tube arrangements
US4618843A (en) Electron beam deflection yoke
GB720776A (en) Improvements relating to magnetic focusing devices for electron beams
JPS5535449A (en) Electromagnetic focusing type cathode ray tube
JPS55143761A (en) Focus magnet
JPS546762A (en) Cathode-ray tube
GB1102719A (en) Improvements in or relating to electron beam periodic magnetic focussing systems
JPS59687Y2 (en) Magnetic field device for focusing a straight electron beam in a microwave tube
RU2072111C1 (en) Heavy-power and heavy-current multibeam o-type device
GB885251A (en) Improvements in permanent magnet systems
JPS5583131A (en) Magnetron
GB2119293A (en) A process for the manufacture of travelling wave tube focussing system tubular components
JPS5650038A (en) Electromagnetic focusing type colour picture tube
JPH0122240Y2 (en)
JPS5543758A (en) Cathode ray tube electron gun
GB1270145A (en) Magnetic beam-focusing system
JPS5632640A (en) Manufacture of cathode-ray tube
JPS5482162A (en) Magnetic focus cathode-ray tube