or·thi·con (ôr th -k n )n. A television camera pickup tube, more sensitive than the iconoscope, that uses a low-velocity electron beam to scan a photoactive mosaic. Also called image orthicon. [orth(o)- + icon(oscope).] |
orthicon [ˈɔːθɪˌkɒn]
n
(Electronics) a television camera tube in which an optical image produces a corresponding electrical charge pattern on a mosaic surface that is scanned from behind by an electron beam. The resulting discharge of the mosaic provides the output signal current See also image orthicon
[from ortho- + icon(oscope)]
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | 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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