Siemens

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The Siemens Corperation has, throughout the years produced many things, among them was the very First Electron Microsocpe. The history of the Electron Microscope started with Siemenes and Ernst Ruska, together with his research team, they created the very first Electron Microscopes.

Models

Siemens, as the company responsible for the invention of the Electron Microscope has produced many models throughout the years, also selling a rebadged version of the Etec Autoscan which was sold under the Siemens name outside the United States. Most of their models however where of the Transmission kind, mostly due to Ernst Ruskas Prescience.

Transmission Electron Microscops
Model Year Accelerating Voltage Cathode Type Nr. of Condensor Lenses Nr. of Imaging Lenses Projective Resolution Successor
High Speed Oscillograph Electron Source 1933 75 KV Gas Discharge 2 Electromagnetic N/A N/A N/A Prototyp 1
Prototyp 1 1933 75 KV Gas Discharge 1 Electromagnetic 2 Electromagnetic Single Polpiece 500 Å [1] Prototyp 2
Prototyp 2 1938 75 KV Gas Discharge 1 Electromagnetic 2 Electromagnetic Single Polpiece 100 Å [2] 'First Series'
'First Series' 1939 75 KV Gas Discharge 1 Electromagnetic 2 Electromagnetic Single Polpiece < 100 Å [3] ÜM100
Prototyp 3 1941 200 KV
ÜM100 1950 75 KV Tungsten Hairpin 1 Electromagnetic 2 (3) Electromagnetic Single Polpiece ? Elmiskop 1
Elmiskop 1 1954 40, 60, 80, 100 KV Tungsten Hairpin 2 Electromagnetic 3 Electromagnetic 4 Polpiece Revolver 5 Å Elmiskop 1A
Vereinfachtes Durchstahlungsmikroskop] 1954 40, 50, 60 KV Tungsten Hairpin 0 Direct Gun Ilumination 2 Electromagnetic 4 Polpiece Revolver 25 Å [4] Elmiskop 51 Prototyp
Elmiskop 51 Prototyp 1956 50KV Gas Discharge 0 Direct Gun Ilumination 2 Permanent Magnet 4 Polpiece Revolver 50 Å [5] Elmiskop 51
Elmiskop 1A 1961 40, 60, 80, 100 KV Tungsten Hairpin 2 Electromagnetic 3 Electromagnetic 4 Polpiece Revolver 4 Å Elmiskop 101
Elmiskop 51 ca. 1970 50 KV Tungsten Hairpin 0 Direct Gun Ilumination 2 Permanent Magnet 4 Polpiece Revolver 25-50 Å Film Grain Dependent[6] None
Elmiskop 101 1968 40, 60, 80, 100 Tungsten Hairpin 2 Electromagnetic 3 Electromagnetic 2 Polpiece Revolver 3-5 Å [7] Elmiskop 102
Elmiskop 102 1972 20, 40, 60, 80, 100, 125KV Tungsten Hairpin 2 Electromagnetic 4 Electromagnetic Single Polpiece 2 Å (Line) 3 Å (Point) [8] None
Elmiskop CT 150 1977 None
Scanning Transmission Electron Microscops
ST 100 F 1977 Tungsten Hairpin None
Scanning Electron Microscops
Autoscan 1972 2.5, 5, 10, 20, 30, (50) KV Tungsten Hairpin / LaB6 / Field Emission? 3 Electromagnetic, Common Coil 1 Electromagnetic Single Polpiece 7 nm None

Refferences

  1. ↑ Geoffrey A. Meek, Practical Electron Microscopy for the Biologist, 2nd Edition (1976), Page 57
  2. ↑ Geoffrey A. Meek, Practical Electron Microscopy for the Biologist, 2nd Edition (1976), Page 58
  3. ↑ Geoffrey A. Meek, Practical Electron Microscopy for the Biologist, 2nd Edition (1976), Page 58
  4. ↑ K. Müller & E. Ruska, Ein vereinfachtest Elektromagnetisches Durschstahlungsmikroskop für Elektronen von 40 bis 60KV*), 1954
  5. ↑ K. Müller & E. Ruska, Ein Hilfselektronenmikroskop für Kurs- und Routinebetrieb, (1956), Vierter Internationaler Kongress für Elektronenmikroskopie, Physikalisch Technischer teil, Page 184-187
  6. ↑ Geoffrey A. Meek, Practical Electron Microscopy for the Biologist, 2nd Edition (1976), Page 489
  7. ↑ Geoffrey A. Meek, Practical Electron Microscopy for the Biologist, 1st Edition (1970), Page 235
  8. ↑ Geoffrey A. Meek, Practical Electron Microscopy for the Biologist, 2nd Edition (1976), Page 502
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