image orthicon

image orthicon
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 (Freq. 1)
• Syn: ↑orthicon

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noun
: a camera tube that is similar to the iconoscope or the orthicon and uses secondary emission and electron multiplication to produce the voltages that are subsequently amplified and transmitted as television-picture signals

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Television.
a camera tube, more sensitive than the orthicon, in which an electron image generated by a photocathode is focused on one side of a target that is scanned on its other side by a beam of low-velocity electrons to produce the output signal.
[1940-45]

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image orthicon noun
A television camera tube that converts the images it receives into electronic impulses which are transmitted as television signals
• • •
Main Entry: ↑image

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image orthicon,
a very sensitive cathode-ray tube used in television cameras to convert light images into electronic impulses. It consists of an orthicon, an electron gun, and an electron multiplier. »

The standard tube in the United States for television cameras is the image orthicon (Kenneth Harwood).


Useful english dictionary. 2012.

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Look at other dictionaries:

  • image-orthicon — [imaʒɔʀtikɔ̃] n. m. ÉTYM. 1962; de image, et orthicon(oscope). ❖ ♦ Techn. Tube électronique naguère utilisé en télévision …   Encyclopédie Universelle

  • image orthicon — ☆ image orthicon n. Electronics a television camera tube of high sensitivity that combines an image converter, an orthicon, and an electron multiplier amplifier …   English World dictionary

  • image-orthicon — superortikonas statusas T sritis fizika atitikmenys: angl. superorthicon vok. Superorthikon, n; Zwischenbildorthikon, n rus. суперортикон, m pranc. image orthicon, m; superorthicon, m; tube image orthicon, m …   Fizikos terminų žodynas

  • image orthicon — Television. a camera tube, more sensitive than the orthicon, in which an electron image generated by a photocathode is focused on one side of a target that is scanned on its other side by a beam of low velocity electrons to produce the output… …   Universalium

  • image orthicon — /ɪmɪdʒ ˈɔθəkɒn/ (say imij awthuhkon) noun → orthicon …  

  • tube image-orthicon — superortikonas statusas T sritis fizika atitikmenys: angl. superorthicon vok. Superorthikon, n; Zwischenbildorthikon, n rus. суперортикон, m pranc. image orthicon, m; superorthicon, m; tube image orthicon, m …   Fizikos terminų žodynas

  • orthicon — [ɔʀtikɔ̃] n. m. ÉTYM. 1952; abrév. de orthiconoscope, de orth , et iconoscope. ❖ ♦ Techn. (télév.). Iconoscope dans lequel les électrons sont accélérés et dirigés de manière à frapper l écran sous un angle droit. Adj. || « L image orthicon »… …   Encyclopédie Universelle

  • IMAGE — Même limitée aux arts visuels, l’image ne peut être séparée des racines profondes qu’elle a dans la mémoire, l’imagination, la pensée ou le rêve. L’image est sans nul doute l’objet de réflexion le plus rebelle aux classifications par genres et… …   Encyclopédie Universelle

  • orthicon — /ˈɔθəkɒn/ (say awthuhkon) noun an early form of television, in which the image is focused on a target cathode which then emits electrons which are collected by the anode, thus establishing a charge pattern. Also, image orthicon. {orth(o) +… …  

  • orthicon — 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 (Freq. 1) •… …   Useful english dictionary

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