image iconoscope

См. также в других словарях:

• iconoscope — [ ikɔnɔskɔp ] n. m. • 1902; autre sens 1866; de icono et scope ♦ Audiovis. Forme primitive de la caméra électronique. ● iconoscope nom masculin L un des premiers tubes électroniques analyseurs d image, destiné aux caméras de télévision.… …   Encyclopédie Universelle

• iconoscope — ☆ iconoscope [ī kän′ə skōp΄ ] n. [ ICONO + SCOPE] a television camera electron tube, consisting of a vacuum tube enclosing a photosensitive plate on which the image is projected and an electron gun that scans the image with a narrow focused beam …   English World dictionary

• Iconoscope — The Iconoscope was the name given to an early television camera tube in which a beam of high velocity electrons scans a photoemissive mosaic. A research group at RCA headed by Vladimir Zworykin introduced the Iconoscope in 1934 [… …   Wikipedia

• Image dissector — The image dissector was an early all electronic television camera tube invented by Philo Farnsworth.Most experimental television systems in the 1920s and 1930s made use of an electromechanical system, usually a Nipkow disk combined with a single… …   Wikipedia

• image dissector — noun : a camera tube resembling the iconoscope and having the electronic image focused electromagnetically through an aperture and voltages that are subsequently amplified and transmitted as television picture signals being produced by electron… …   Useful english dictionary

• Iconoscope — Unité complet d iconoscope, retiré d une caméra de télé aux USA, 1955. L’iconoscope est un tube analyseur de caméra. Il est inventé par Vladimir Zworykin en 1923. Le tube de dissection de l image est mis au point par Philo Farnsworth peu de temps …   Wikipédia en Français

• iconoscope — noun Etymology: from Iconoscope, a trademark Date: 1932 a camera tube containing an electron gun and a photoemissive mosaic screen of which each cell produces a charge proportional to the varying light intensity of the image focused on the screen …   New Collegiate Dictionary

• 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) •… …   Useful english dictionary

• iconoscope — (entrée créée par le supplément) (i ko no sko p ) s. m. Instrument destiné à donner du relief aux images planes examinées avec les deux yeux. ÉTYMOLOGIE    Du grec, image, et, examiner …   Dictionnaire de la Langue Française d'Émile Littré

• iconoscope — /aɪˈkɒnəskoʊp/ (say uy konuhskohp) noun the cathode ray tube which focuses the optical image which the cathode ray beam scans. {trademark} …  

• Video camera tube — In older video cameras, before the mid to late 1980s, a video camera tube or pickup tube was used instead of a charge coupled device (CCD) for converting an optical image into an electrical signal. Several types were in use from the 1930s to the… …   Wikipedia