The Performance of Color-Television Picture-Tube Phosphor Screens

Over the years, color picture tubes have been greatly improved in light-output performance while their ability to reproduce color has remained as good as or superior to other color-reproduction systems such as printing and color photography. This paper reviews the light-emitting characteristics of many of the phosphors that have been developed for color television, and presents the luminance and color-gamut potential of several tri-color combinations. A color-difference scale for use in color television is suggested and applied to the color-shift phenomenon in red zinc cadmium sulfide phosphor. Color coordinates are presented for twenty common objects and data are given on the desaturation effects of ambient illumination.