Supericonoscope IS-9

Description:

The supericonoscope is one of the oldest image tubes for TV cameras. It has separate light sensitive and image dissecting electrodes. Electrons are pushed out of the sensitive electrode by the impacting light. The electrons fly through the thick tube and are absorbed by the image dissecting electrode on the other end. This electrode is composed of a layer of conducting and insulating material, which gets charged by the electrons. The charge is removed by a scanning electron beam which comes out of a separate electron gun and is electromagnetically deflected. This type of image tube was used in Germany since 1936 and was the first type to enable image recording outside the studios, without the help of powerful lights which were necessary with the older types of image tubes. In Czechoslovakia, it was used from the beginning of the television till the end of the 1950s. At first, these German military IS-9 tubes were used. They remained in Czechoslovakia as a remainder of German television technology research and were originally designed to be used in remote control bombs. Since 1953, new supericonoscopes were produced in Czechoslovakia. The life of a supericonoscope was around 100 hours.