Meaning of IMAGE ORTHICON

Pronunciation:			'imij'orthu`kân
WordNet Dictionary
	Definition:		[n]  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
	Websites:
	Synonyms:		orthicon
	See Also:		television pickup tube, television-camera tube