A Signal Analysis for Tri-Electrode-Vidicon Color Cameras with Striped Filters in Complementary Primary Colors

Abstract

A tri-electrode-vidicon has a target structure comprising a transparent substrate and a plurality of red, green and blue striped optical filters.
This paper gives a theoretical anlysis of the system using the striped filters in complementary colors in order to increase the sensitivity of the tri-electrode-vidicon. It is assumed that the spectral distributions of the sensitivity of the vidicon and the illumination are uniform and that the color separation filters have the ideal characteristics.
As a result of the investigation it is pointed out that the chrominance and luminance signals have to be generated separately to maintain better signal to noise ratio and it is concluded that the combination of the filter striped of yellow, magenta and cyan is the best system for improving the signal to noise ratio, increasing the sensitivity and obtaining the balanced mixing in tri-electrode-vidicon color cameras.