Deflection defocusing effects in cathode-ray tubes at large deflection angles

@inproceedings{Hutter1970DeflectionDE,
  title={Deflection defocusing effects in cathode-ray tubes at large deflection angles},
  author={R. G. E. Hutter},
  year={1970}
}
In modern color television tubes, an array of three electron beams, converging at a target, is deflected through angles of up to 55°. The conventional, small-angle deflection theory cannot be extended to deal with the convergence defects of deflection fields at such large angles since certain series expansions, basic to that theory, diverge at angles larger than 45°. A new approach to the theoretical treatment of deflection defocusing effects in cathode-ray tubes, based on the application of… CONTINUE READING

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