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RCA 1850A 6.5" Iconoscope
Tube de prise de vue pour télévision
Ikonoskop Bildaufnahmeröhre

For pickup from motion-picture film or slides. Utilizes electrostatic focus and magnetic deflection. Deflection angle is 55° approx.

A research group at RCA headed by Vladimir Zworykin presented the iconoscope to the general public in a press conference in June 1933, and two detailed technical papers were published in September and October of the same year. The 1850 was the first commercially available camera tube; it was used in studio cameras through WW2 and in film chains into the 50s.

Fiche technique • Data sheet • Datenblatt: 1850A.pdf & 1850A.pdf

See also • Voir aussi • Siehe auch : RCA 1846 4.5" Iconoscope

 

RCA 1850A Iconoscope

Longueur hors tout • Overall length • Gesamtlänge : 38 cm • 14" 15/16

RCA 1850A Iconoscope

The iconoscope uses a mosaic consisting of small particles of photoemitting material on a dielectric plate (mica), which makes up a series of mini-condensors. Light absorbed by the photosensitive silver-oxygen-cesium photoemitter emits electrons to a surrounding collector. The amount of charge collected is proportional to the charge on each condensor, and therefore to the strength of illumination of each element.

RCA 1850A Iconoscope

RCA 1850A Iconoscope

RCA 1850A Iconoscope

RCA 1850A Iconoscope

RCA 1850A Iconoscope

RCA 1850A Iconoscope

 


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