Electrostatic focus and deflection vidicon

Abstract

The vidicon is now used in a large variety of applications because of its small size, simplicity of circuit requirements and relatively low cost. One main disadvantage has been the size, weight and power consumption of magnetic focus and deflection components. To overcome this problem, an electrostatic focus and deflection vidicon has been developed. Design goals were established assuming first that the tube must be no larger in any dimension than standard magnetic types such as the 7325. Second, operating voltages must be suitable for completely transistorized circuitry. Third, the design must lend itself to ruggedization for missile and other severe applications. The tube is 1 in diameter and 6\frac{1}{4} long. Maximum DC potential required is 300 volts, with deflection voltages of about 15 volts per plate. Key design feature is use of the Deflectron developed by Dr. Kurt Schlesinger. This device has, among its advantages, a common vertical and horizontal center of deflection plus an inherently rugged construction. A saddle-field lens is used for focusing.