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CH301200A - Electron lens arrangement working with permanent magnetic excitation. - Google Patents

Electron lens arrangement working with permanent magnetic excitation.

Info

Publication number
CH301200A
CH301200A CH301200DA CH301200A CH 301200 A CH301200 A CH 301200A CH 301200D A CH301200D A CH 301200DA CH 301200 A CH301200 A CH 301200A
Authority
CH
Switzerland
Prior art keywords
permanent magnetic
lens arrangement
electron lens
magnetic excitation
arrangement working
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Siem Halske
Original Assignee
Siemens Ag
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 Ag filed Critical Siemens Ag
Publication of CH301200A publication Critical patent/CH301200A/en

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0015—Non-sealed electrodes
    • H01J2893/0018—Bar or cage-like grids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Beam Exposure (AREA)
  • Particle Accelerators (AREA)
  • Lens Barrels (AREA)
CH301200D 1948-10-01 1951-07-21 Electron lens arrangement working with permanent magnetic excitation. CH301200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP12132A DE857991C (en) 1948-10-01 1948-10-01 Electron lens working with permanent magnetic excitation

Publications (1)

Publication Number Publication Date
CH301200A true CH301200A (en) 1954-08-31

Family

ID=25784630

Family Applications (1)

Application Number Title Priority Date Filing Date
CH301200D CH301200A (en) 1948-10-01 1951-07-21 Electron lens arrangement working with permanent magnetic excitation.

Country Status (5)

Country Link
US (1) US2804548A (en)
CH (1) CH301200A (en)
DE (2) DE857991C (en)
GB (1) GB722096A (en)
NL (1) NL92251C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1060511B (en) * 1954-08-27 1959-07-02 Hitachi Ltd Three-stage electron lens system excited by permanent magnets

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1035813B (en) * 1956-01-13 1958-08-07 Siemens Ag Lens arrangement for electron microscopes or the like.
NL99653C (en) * 1956-03-01
US2945153A (en) * 1956-08-31 1960-07-12 Rca Corp Electron beam tube
US2939994A (en) * 1957-01-28 1960-06-07 Westinghouse Electric Corp Electron discharge device
JPS547236A (en) * 1977-06-20 1979-01-19 Hitachi Ltd High-resolution cathode-ray tube
US4359706A (en) * 1979-12-18 1982-11-16 Arnold Flack Magnet pole pieces and pole piece extensions and shields
CN119233513B (en) * 2024-08-19 2025-04-15 国电投核力同创(北京)科技有限公司 Adjusting block for achromatic deflection magnet and achromatic deflection magnet adjusting method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163157A (en) * 1937-07-22 1939-06-20 Bell Telephone Labor Inc Electron discharge apparatus
DE973258C (en) * 1938-03-08 1959-12-31 Siemens Ag Magnetic pole shoe lens with a small focal length for electron-optical enlargements in electron microscopes
US2369796A (en) * 1943-03-26 1945-02-20 Rca Corp Electron lens system
NL89013C (en) * 1944-05-31
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
GB680300A (en) * 1950-02-23 1952-10-01 Vickers Electrical Co Ltd Improvements relating to magnetic electron lenses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1060511B (en) * 1954-08-27 1959-07-02 Hitachi Ltd Three-stage electron lens system excited by permanent magnets

Also Published As

Publication number Publication date
NL92251C (en)
DE857991C (en) 1956-01-12
US2804548A (en) 1957-08-27
GB722096A (en) 1955-01-19
DE891307C (en) 1956-08-23

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