orthicon

Definitions of orthicon
  1. noun
    a now obsolete picture pickup tube in a television camera; electrons emitted from a photoemissive surface in proportion to the intensity of the incident light are focused onto the target causing secondary emission of electrons
    synonyms: image orthicon
    see moresee less
    type of:
    television pickup tube, television-camera tube
    a tube that rapidly scans an optical image and converts it into electronic signals
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