"103856728"^^ . "orthicon"@en-us . "image orthicon"@en-us . "orthicon"^^ . "03856728-n"^^ . . . . . "0"^^ . "0"^^ . "103064465"@en-us . . "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"@en-us . . . . . "103711149"@en-us . .