Dual-beam crt

Details Dual-beam crt Dual-beam crt

H - Electricity

01

J

313/35.261

H01J 29/74 (2006.01)

Patent

CA 1038440

DUAL-BEAM CRT Abstract of the Disclosure A dual-beam cathode-ray tube having a pair of electron guns and associated deflection means disposed side-by-side on each side of a central axis is described in which the electron guns are parallel and the deflection means includes beam centering plates and angled horizontal deflection plates to direct the electron beams toward the central axis, precluding the need for a large-diameter tube neck in which the entire gun structures are angled. Bowing control plates are disposed adjacent the beam centering plates to minimize trace bowing, and an inter-gun shield is disposed between the horizontal deflection plates to control and correct display pattern geometry distortion. Inner-gun and outer-gun shield members are supported by and isulated from the inner-gun shield near the exit of the horizontal deflection plates for correcting keystone pattern distortion.

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