orthicon

名词 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
   同义词：image orthicon

or.thi.con

n.（名词）
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（摄）象管：一种运用低带电子来扫描感光栅格的电视摄象管，比光电摄象管更敏感也作 image orthicon

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