A fully electrostatic, flat, thin television tube

A description is given of important improvements and modifications which have been made in the design of a flat television tube. In the new form, magnetic components have been eliminated and considerable structural simplifications have been made. An electrostatic deflection system is described which is capable of giving deflection angles of ±60°, and a mathematical model of such a system is developed. The design of the electrostatic collimator which follows the deflection system is treated mathematically, and results of measurements on experimental models of both components of the tube are described. The action of the scanning array which provides the frame scan is discussed.