Inventors:
Richard M. Gorski - Arlington Heights IL
Eugene A. Babicz - Evanston IL
Assignee:
Zenith Electronics Corporation - Glenview IL
International Classification:
H01J 2951
H01J 2950
H01J 2970
Abstract:
A three beam, in-line, color CRT electron gun is disclosed for use in high resolution tubes with self convergent yokes. The dynamic quadrupole and main lenses of the gun are complementary to provide emitted beams that are radially symmetrical and of like size and shape, and of constant horizontal dimension and focal length throughout the deflection cycle, thus letting the yoke provide for the correct beam focus upon deflection. Vertical emitted-beam dimension is balanced against the yoke compressive force and the increased deflected beam throw distance to provide well-controlled spot sizes.