NL92220C - - Google Patents

Info

Publication number
NL92220C
NL92220C NL92220DA NL92220C NL 92220 C NL92220 C NL 92220C NL 92220D A NL92220D A NL 92220DA NL 92220 C NL92220 C NL 92220C
Authority
NL
Netherlands
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 NL92220C publication Critical patent/NL92220C/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Beam Exposure (AREA)
  • Electron Sources, Ion Sources (AREA)
NL92220D 1952-09-13 NL92220C (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NL92220C true NL92220C (en)

Family

ID=19750580

Family Applications (2)

Application Number Title Priority Date Filing Date
NL91356D NL91356C (en) 1952-09-13
NL92220D NL92220C (en) 1952-09-13

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL91356D NL91356C (en) 1952-09-13

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
US2749464A (en) 1956-06-05
NL91356C (en)
DE948799C (en) 1956-09-06
FR1087977A (en) 1955-03-02
GB735272A (en) 1955-08-17
CH316013A (en) 1956-09-15
BE522744A (en)

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