image orthicon
noun 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.
Origin of image orthicon
First recorded in 1940–45
Words nearby image orthicon
image consultant,
image converter,
image dissector,
image enhancement,
image intensifier,
image orthicon,
image printer,
image processing,
image tube,
imagemaker,
imager
British Dictionary definitions for image orthicon
image orthicon
noun
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