JPS52100195A - Permanent magnet for electronic lens - Google Patents

Permanent magnet for electronic lens

Info

Publication number
JPS52100195A
JPS52100195A JP1603776A JP1603776A JPS52100195A JP S52100195 A JPS52100195 A JP S52100195A JP 1603776 A JP1603776 A JP 1603776A JP 1603776 A JP1603776 A JP 1603776A JP S52100195 A JPS52100195 A JP S52100195A
Authority
JP
Japan
Prior art keywords
permanent magnet
electronic lens
magnetism
electronic
deviated
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
JP1603776A
Other languages
Japanese (ja)
Inventor
Shozo Kasai
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 JP1603776A priority Critical patent/JPS52100195A/en
Publication of JPS52100195A publication Critical patent/JPS52100195A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce distortion of electronic image due to deviated magnetism of a permanent magnet by providing a magnetism relieving plate between two or more ring-stated permanent magnets.
COPYRIGHT: (C)1977,JPO&Japio
JP1603776A 1976-02-18 1976-02-18 Permanent magnet for electronic lens Pending JPS52100195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1603776A JPS52100195A (en) 1976-02-18 1976-02-18 Permanent magnet for electronic lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1603776A JPS52100195A (en) 1976-02-18 1976-02-18 Permanent magnet for electronic lens

Publications (1)

Publication Number Publication Date
JPS52100195A true JPS52100195A (en) 1977-08-22

Family

ID=11905375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1603776A Pending JPS52100195A (en) 1976-02-18 1976-02-18 Permanent magnet for electronic lens

Country Status (1)

Country Link
JP (1) JPS52100195A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009157054A1 (en) * 2008-06-24 2009-12-30 株式会社アドバンテスト Multicolumn electron beam exposure apparatus and magnetic field generating apparatus
JP2014194923A (en) * 2013-02-27 2014-10-09 Param Co Ltd Electron lens and electron beam device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009157054A1 (en) * 2008-06-24 2009-12-30 株式会社アドバンテスト Multicolumn electron beam exposure apparatus and magnetic field generating apparatus
US8390201B2 (en) 2008-06-24 2013-03-05 Advantest Corp. Multi-column electron beam exposure apparatus and magnetic field generation device
JP5363480B2 (en) * 2008-06-24 2013-12-11 株式会社アドバンテスト Multi-column electron beam exposure apparatus and magnetic field generator
JP2014194923A (en) * 2013-02-27 2014-10-09 Param Co Ltd Electron lens and electron beam device

Similar Documents

Publication Publication Date Title
JPS51131389A (en) Device for uniform polarized magnetic field
JPS5280001A (en) Binaural system
JPS52100195A (en) Permanent magnet for electronic lens
JPS5250615A (en) Outline compensation circuit
JPS545334A (en) Magnetic bubble memory device
JPS527723A (en) Photographic lens of large aperture ratio
JPS5299764A (en) Magnetic field type electron lens
JPS5367346A (en) Magnetron
JPS5312352A (en) Pen for recorder
JPS52122811A (en) Rotor for permanent magnet type rotary machine
JPS5275224A (en) Index color receiving tube
JPS51118363A (en) Permanent magnet lens system
SU621027A1 (en) Magnetic screen
JPS52105817A (en) Removably holding device for focal plate of camera
JPS5228316A (en) Electronic shutter device for camera
JPS5345131A (en) Magnetic circuit for magnetic bubble
JPS5289456A (en) Magnetic field type lens
JPS52109857A (en) Transparent type electronic microscope
JPS526072A (en) Compensating coil in an electronic lense
JPS5211907A (en) Magnetic recorder
JPS5431237A (en) Magnetic bubble driving magnetic circuit
JPS5427328A (en) Bubble memory device
JPS52109192A (en) Permanent magnet unit
JPS5294767A (en) Magnetic field type electronic lens
JPS524827A (en) Electronic programmed shutter circuit