low-velocity camera tube

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• 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

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• 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

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• orthicon — noun Etymology: International Scientific Vocabulary orth + iconoscope Date: 1939 a camera tube similar to but more sensitive than an iconoscope in which the charges are scanned by a low velocity beam …   New Collegiate Dictionary

• 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

• orthicon — /awr thi kon /, n. Television. a camera tube, more sensitive than the iconoscope, in which a beam of low velocity electrons scans a photoemissive mosaic. Also, orthiconoscope /awr thi kon euh skohp /. [1935 40; ORTH + ICON(OSCOPE)] * * * …   Universalium

• vidicon — /vid i kon /, n. Television. a camera tube in which a charge density pattern is formed on a photoconductive surface scanned by a beam of low velocity electrons for transmission as signals. Cf. Saticon. [1945 50; VID(EO) + ICON(OSCOPE)] * * * …   Universalium

• orthicon — or•thi•con [[t]ˈɔr θɪˌkɒn[/t]] also or•thi•con•o•scope [[t]ˌɔr θɪˈkɒn əˌskoʊp[/t]] n. rtv a television camera tube in which a beam of low velocity electrons scans a photoemissive mosaic • Etymology: 1935–40 …   From formal English to slang