image orthicon


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Related to image orthicon: vidicon

image orthicon

n.

image orthicon

n
(Electronics) a television camera tube in which 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
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Noun1.image orthicon - 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
television pickup tube, television-camera tube - a tube that rapidly scans an optical image and converts it into electronic signals
References in periodicals archive ?
In 1956 Lowell Observatory astronomers attempted to capture images of the canals using a state-of-the-art television camera equipped with a sensitive image orthicon tube, but they were hobbled by having no way to record the view other than by taking lots of hit-and-miss photographs of the television monitor.