Color display system and tube cathode-ray tube including a...

Details Color display system and tube cathode-ray tube including a... Color display system and tube cathode-ray tube including a...

H - Electricity

01

J

313/35.14

H01J 29/50 (2006.01) H01J 29/51 (2006.01)

Patent

CA 1275685

ABSTRACT A color display system includes a cathode-ray tube and a yoke. The yoke is a non-converging deflecting type. The cathode-ray tube has an electron gun for generating and directing three electron beams, a center beam and two outer beams, along paths toward a screen of the tube. The electron gun includes electrodes that comprise a beam-forming region and electrodes that form a main focusing lens. The main focusing lens is formed by at least two focusing electrodes. The focusing electrode closest to the beam- forming region includes at least two laterally-spaced parts. Each spaced part forms a portion of a dipole lens structure in the path of an outer electron beam. Means are provided for applying to at least one of the spaced parts a dynamic signal which is related to the deflection of the electron beams.

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