名詞 orthicon:

1. 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
   同義詞：image orthicon

or.thi.con

n.（名詞）
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
正析（攝）象管：一種運用低帶電子來掃描感光柵格的電視攝象管，比光電攝象管更敏感也作 image orthicon

來源：
orth(o)-
orth(o)-
icon(oscope)
icon(oscope)