Image Orthicons for Color Cameras

The image orthicon is the only pickup tube commercially available that possesses the high sensitivity required for color cameras. However, the demands of a color picture are such that the standard image orthicon requires changes in design, processing, and testing in order to fulfill this function. These requirements have led to the development of a special image orthicon for color, the RCA-1854. The operating conditions for the new tube are substantially different from those used in monochrome practice. These new conditions change the performance characteristics of the tube and the character of the reproduced picture.