Some Developments in Infrared Communications Components

This paper describes briefly some of the recent advances made in the performance of components utilized in communications by infrared radiation. The components described include radiators consisting of infrared sources of several varieties and their associated filters. A brief description is also given of powersupply equipment for these radiators. Receivers of infrared energy including phosphors, image tubes, and photocells, with typical circuits with which they are used, are also discussed.