BE429637A - - Google Patents

Info

Publication number
BE429637A
BE429637A BE429637DA BE429637A BE 429637 A BE429637 A BE 429637A BE 429637D A BE429637D A BE 429637DA BE 429637 A BE429637 A BE 429637A
Authority
BE
Belgium
Application number
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.)
Publication of BE429637A publication Critical patent/BE429637A/xx

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
    • H01J37/141—Electromagnetic lenses

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Beam Exposure (AREA)
  • Eyeglasses (AREA)
BE429637D 1937-08-16 BE429637A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE517680X 1937-08-16

Publications (1)

Publication Number Publication Date
BE429637A true BE429637A (zh)

Family

ID=6549644

Family Applications (1)

Application Number Title Priority Date Filing Date
BE429637D BE429637A (zh) 1937-08-16

Country Status (4)

Country Link
US (1) US2209669A (zh)
BE (1) BE429637A (zh)
FR (1) FR841823A (zh)
GB (1) GB517680A (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759837C (de) * 1940-05-07 1954-06-28 Manfred Von Ardenne Magnetische Linse fuer Elektronenmikroskope mit einem unsymmetrisch zur Spulenmitte liegenden Polschuhsystem
US2418432A (en) * 1944-05-01 1947-04-01 Rca Corp Magnetic electron lens system
US2648036A (en) * 1946-03-12 1953-08-04 Us Navy Adjustable focusing coil
US3509503A (en) * 1967-02-27 1970-04-28 Nippon Electron Optics Lab Objective lens pole pieces
US4541890A (en) * 1982-06-01 1985-09-17 International Business Machines Corporation Hall ion generator for working surfaces with a low energy high intensity ion beam

Also Published As

Publication number Publication date
US2209669A (en) 1940-07-30
GB517680A (en) 1940-02-06
FR841823A (fr) 1939-05-31

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