GB710960A - Improvements relating to magnetic lens arrangements - Google Patents

Improvements relating to magnetic lens arrangements

Info

Publication number
GB710960A
GB710960A GB20402/51A GB2040251A GB710960A GB 710960 A GB710960 A GB 710960A GB 20402/51 A GB20402/51 A GB 20402/51A GB 2040251 A GB2040251 A GB 2040251A GB 710960 A GB710960 A GB 710960A
Authority
GB
United Kingdom
Prior art keywords
magnetic
lens
pole
teeth
image magnification
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.)
Expired
Application number
GB20402/51A
Other languages
English (en)
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB710960A publication Critical patent/GB710960A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement or ion-optical arrangement
    • H01J37/10—Lenses
    • H01J37/14—Lenses magnetic
    • H01J37/143—Permanent magnetic lenses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Beam Exposure (AREA)
  • Lenses (AREA)
GB20402/51A 1950-08-29 1951-08-29 Improvements relating to magnetic lens arrangements Expired GB710960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE710960X 1950-08-29

Publications (1)

Publication Number Publication Date
GB710960A true GB710960A (en) 1954-06-23

Family

ID=6619728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20402/51A Expired GB710960A (en) 1950-08-29 1951-08-29 Improvements relating to magnetic lens arrangements

Country Status (4)

Country Link
US (1) US2761991A (enrdf_load_stackoverflow)
FR (1) FR1043174A (enrdf_load_stackoverflow)
GB (1) GB710960A (enrdf_load_stackoverflow)
NL (1) NL94737C (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928004A (en) * 1954-08-27 1960-03-08 Hitachi Ltd Three stage electron lens system excited by permanent magnets
NL100357C (enrdf_load_stackoverflow) * 1955-10-04
US2919381A (en) * 1956-07-25 1959-12-29 Farrand Optical Co Inc Electron lens

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973258C (de) * 1938-03-08 1959-12-31 Siemens Ag Magnetische Polschuhlinse kleiner Brennweite fuer elektronenoptische Vergroesserungen in Elektronenmikroskopen
BE437814A (enrdf_load_stackoverflow) * 1939-02-21
US2220973A (en) * 1939-03-31 1940-11-12 Rca Corp Electron microscope
US2503173A (en) * 1946-10-18 1950-04-04 Rca Corp Permanent magnetic electron lens system
US2533687A (en) * 1949-05-27 1950-12-12 Quam Nichols Company Magnetic focusing device

Also Published As

Publication number Publication date
US2761991A (en) 1956-09-04
NL94737C (enrdf_load_stackoverflow)
FR1043174A (fr) 1953-11-06

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