image orthicon


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Related to image orthicon: vidicon

image orthicon

n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
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
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References in periodicals archive ?
Investigations in this area tend to focus on examining the formal aspects of the communication process: we count syllables and sentences and focus on stylistics in print; we count frames and cuts and focus on film techniques in movies; we count horizontal and vertical lines and focus on the physics of the Image Orthicon tube in television.
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.