Display system utilizing beam shape correction

Details Display system utilizing beam shape correction Display system utilizing beam shape correction

H - Electricity

01

J

313/35.1203, 313

H01J 29/51 (2006.01) H01J 29/52 (2006.01) H01J 29/76 (2006.01) H01J 31/20 (2006.01)

Patent

CA 1065383

DISPLAY SYSTEM UTILIZING BEAM SHAPE CORRECTION Abstract of the Disclosure A color picture reproducing tube utilizes three coplanar electron beams. Convergence of the three beams along at least one axis is accomplished by a deflection assembly producing a magnetic deflection field with particular astigmatism characteristics which also elliptically distorts each of the three beams in a first direction. The electron gun assembly within the picturetube includes apertured electrodes which predistort the beams elliptically in a second direction orthogonal to the first direction of distortion.

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