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JPS51118363A - Permanent magnet lens system - Google Patents

Permanent magnet lens system

Info

Publication number
JPS51118363A
JPS51118363A JP4318575A JP4318575A JPS51118363A JP S51118363 A JPS51118363 A JP S51118363A JP 4318575 A JP4318575 A JP 4318575A JP 4318575 A JP4318575 A JP 4318575A JP S51118363 A JPS51118363 A JP S51118363A
Authority
JP
Japan
Prior art keywords
permanent magnet
lens system
magnet lens
lense
wide range
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
JP4318575A
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 JP4318575A priority Critical patent/JPS51118363A/en
Publication of JPS51118363A publication Critical patent/JPS51118363A/en
Pending legal-status Critical Current

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  • Lenses (AREA)

Abstract

PURPOSE: To get permanent magnet lens system with wide range for focal distance and small magnetization lense function by shield pipe and short ring.
COPYRIGHT: (C)1976,JPO&Japio
JP4318575A 1975-04-11 1975-04-11 Permanent magnet lens system Pending JPS51118363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4318575A JPS51118363A (en) 1975-04-11 1975-04-11 Permanent magnet lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4318575A JPS51118363A (en) 1975-04-11 1975-04-11 Permanent magnet lens system

Publications (1)

Publication Number Publication Date
JPS51118363A true JPS51118363A (en) 1976-10-18

Family

ID=12656838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4318575A Pending JPS51118363A (en) 1975-04-11 1975-04-11 Permanent magnet lens system

Country Status (1)

Country Link
JP (1) JPS51118363A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55157845A (en) * 1979-05-28 1980-12-08 Hitachi Metals Ltd Focusing magnet
JP2007311117A (en) * 2006-05-17 2007-11-29 Hitachi High-Technologies Corp Electron lens and charged particle beam apparatus using the same
JP6954704B1 (en) * 2021-04-30 2021-10-27 株式会社北海光電子 Photoemission electron microscope

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55157845A (en) * 1979-05-28 1980-12-08 Hitachi Metals Ltd Focusing magnet
JPH0138351B2 (en) * 1979-05-28 1989-08-14 Hitachi Metals Ltd
JP2007311117A (en) * 2006-05-17 2007-11-29 Hitachi High-Technologies Corp Electron lens and charged particle beam apparatus using the same
JP6954704B1 (en) * 2021-04-30 2021-10-27 株式会社北海光電子 Photoemission electron microscope
JP2022170848A (en) * 2021-04-30 2022-11-11 株式会社北海光電子 photoelectron microscope

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