| 释义 |
vid·i·con
\ˈvidəˌkän\ noun
(-s)
Usage: often capitalized
Etymology: video + iconoscope
: a small camera tube containing an electron gun and a photoconductor on which an optical image is focused so that a beam of electrons from the gun is collected by the photoconductor and transformed into current whose rapid fluctuations representing the light and shade of the image are subsequently amplified and transmitted as television picture signals |