Television Pickup Tubes Using Low-Velocity Electron-Beam Scanning

  title={Television Pickup Tubes Using Low-Velocity Electron-Beam Scanning},
  author={A. Rose and H. Iams},
  journal={Proceedings of the IRE},
  • A. Rose, H. Iams
  • Published 1939
  • Physics
  • Proceedings of the IRE
  • Television pickup tubes which use a low-velocity electron beam for scanning a photosensitive target offer the possibility of avoiding some of the limitations of devices which use a high-velocity beam. Some of the advantages of the low-velocity beam are: (1) low level of spurious signals, (2) high maximum signal output, and (3) high efficiency of conversion of light into signal. The major problems encountered are: (1) ways to keep the beam in focus and (2) ways to obtain undistorted scanning of… CONTINUE READING
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