Publisher Summary This chapter outlines the development work at CBS Laboratories on photoelectronic image devices. In CBS Laboratories, technical developments have been mainly concerned with improved phosphor deposition techniques and with studying photocathode characteristics at extremely high emission densities. Phosphor deposition using cataphoretic techniques has resulted in phosphor screens which are very uniform and closely packed. This procedure minimizes “noise” generated by nonuniformity of phosphor deposition. The development of various types of camera tube using the image dissector principle has been undertaken. One such tube which is described in this chapter uses electrostatic focusing and deflection. This tube is constructed to have very high deflection-linearity and to be extremely rugged. In the area of applications, significant improvements were made in high resolution film read-out for conversion of photographic information into electrical information. The film scanner system using the specially developed “Line Scan” cathode ray tube is able to read out photographic information with a resolution of 40 lp/mm at a contrast ratio of 25%. The chapter describes this system and outlines its general capabilities.