Television Pickup Tubes with Cathode-Ray Beam Scanning

  title={Television Pickup Tubes with Cathode-Ray Beam Scanning},
  author={H. Iams and Albert Rose},
  journal={Proceedings of the Institute of Radio Engineers},
  • H. Iams, A. Rose
  • Published 1 August 1937
  • Physics
  • Proceedings of the Institute of Radio Engineers
Television pickup tubes which use cathode-ray beam scanning, although only one class of television pickup devices, may be made in a variety of ways, a number of which are described in this paper. In these tubes, the function of the electron beam is to release secondary electrons from the target, the number escaping being modulated by electrostatic fields, magnetic fields, orientation of electrodes or changes in the secondary emission ratio of the target. The Iconoscope is a well-known example… 
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