CH316013A - Magnetic electron lens - Google Patents

Magnetic electron lens

Info

Publication number
CH316013A
CH316013A CH316013DA CH316013A CH 316013 A CH316013 A CH 316013A CH 316013D A CH316013D A CH 316013DA CH 316013 A CH316013 A CH 316013A
Authority
CH
Switzerland
Prior art keywords
electron lens
magnetic electron
magnetic
lens
electron
Prior art date
Application number
Other languages
German (de)
Inventor
Bart Le Poole Jan
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH316013A publication Critical patent/CH316013A/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, ion-optical arrangement
    • H01J37/10—Lenses
    • H01J37/14—Lenses magnetic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Beam Exposure (AREA)
  • Electron Sources, Ion Sources (AREA)
CH316013D 1952-09-13 1953-09-11 Magnetic electron lens CH316013A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL172475 1952-09-13

Publications (1)

Publication Number Publication Date
CH316013A true CH316013A (en) 1956-09-15

Family

ID=19750580

Family Applications (1)

Application Number Title Priority Date Filing Date
CH316013D CH316013A (en) 1952-09-13 1953-09-11 Magnetic electron lens

Country Status (7)

Country Link
US (1) US2749464A (en)
BE (1) BE522744A (en)
CH (1) CH316013A (en)
DE (1) DE948799C (en)
FR (1) FR1087977A (en)
GB (1) GB735272A (en)
NL (2) NL92220C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939994A (en) * 1957-01-28 1960-06-07 Westinghouse Electric Corp Electron discharge device
US3787696A (en) * 1972-03-15 1974-01-22 Etec Corp Scanning electron microscope electron-optical column construction
FR2597259A1 (en) * 1986-04-15 1987-10-16 Thomson Csf ELECTRONIC BEAM DEVICE FOR PROJECTING THE IMAGE OF AN OBJECT ON A SAMPLE
GB0912332D0 (en) * 2009-07-16 2009-08-26 Vg Systems Ltd Magnetic lens,method for focussing charged particles and charged particle energy analyser
DE102009028013B9 (en) * 2009-07-24 2014-04-17 Carl Zeiss Microscopy Gmbh Particle beam device with a diaphragm unit and method for adjusting a jet stream in a particle beam device
EP3872837A1 (en) 2020-02-25 2021-09-01 The Provost, Fellows, Scholars and other Members of Board of Trinity College Dublin Pole piece for an electron microscope

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB472165A (en) * 1936-03-11 1937-09-13 Ferranti Ltd Improvements in or relating to focusing systems for electron beams
GB494839A (en) * 1937-05-01 1938-11-01 British Thomson Houston Co Ltd Improvements in and relating to cathode ray apparatus
US2295403A (en) * 1940-11-15 1942-09-08 Rca Corp Apertured electron lens and method of alignment
DE898217C (en) * 1943-01-27 1953-11-30 Siemens Ag Arrangement for changing the enlargement achievable with a magnetic electron lens
US2369782A (en) * 1943-04-01 1945-02-20 Rca Corp Electron lens system
NL89013C (en) * 1944-05-31
US2418349A (en) * 1945-12-13 1947-04-01 Rca Corp Method of and means for correcting for distortion in electron lens systems
US2469165A (en) * 1946-10-29 1949-05-03 Rca Corp Correction device for electron lenses
NL147142B (en) * 1948-06-29 Hoffmann La Roche PROCESS FOR THE PREPARATION OF A HYDROCHLORIDE OF A BENZODIAZEPINE DERIVATIVE, PROCEDURE FOR THE PREPARATION OF PREPARATIONS WITH HYPNOGENIC PROPERTIES, AND THE PREPARATION FORMED.
US2567674A (en) * 1949-11-08 1951-09-11 Rca Corp Velocity modulated electron discharge device
US2594099A (en) * 1950-04-22 1952-04-22 Ite Circuit Breaker Ltd Focusing coil for cathode-ray tubes
US2679018A (en) * 1950-06-30 1954-05-18 Rca Corp Magnetic electron lens pole piece

Also Published As

Publication number Publication date
DE948799C (en) 1956-09-06
FR1087977A (en) 1955-03-02
GB735272A (en) 1955-08-17
US2749464A (en) 1956-06-05
NL91356C (en)
NL92220C (en)
BE522744A (en)

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