a television camera pickup tube of high sensitivity in which the image is focused on a thin, transparent metal film backed with a layer of photoconductive material that is scanned with a low-velocity electron beam
See vidicon in American Heritage Dictionary 4
(vĭdˈĭ-kŏnˌ)
noun
A small television camera tube that forms a charge-density image on a photoconductive surface for subsequent electron-beam scanning.