H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/35.14
H01J 29/51 (2006.01) H01J 29/50 (2006.01)
Patent
CA 1278814
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 assembly for generating and directing three electron beams, located at the corners of an equilateral triangle, along paths toward a screen of the tube. The electron gun assembly comprises three electron guns each including electrodes that comprise a beam-forming region and electrodes that form a main focusing lens in the path of an electron beam. The main focusing lens is formed by at least two focusing electrodes. The focusing electrode closest to the beam- forming region includes a separated part adjacent to the path of the electron beam. Each separated part forms a portion of a dipole lens structure in the electron beam path. Means are provided for applying dynamic signals to the separated parts which are related to the deflection of the electron beams. The dipole lens structures establish electrostatic dipole fields in the path of the three electron beams that cause the beams to converge at the screen for all angles of deflection.
538958
Alig Roger Casanova
Bloom Stanley
Hockings Eric Francis
Craig Wilson And Company
Rca Licensing Corporation
LandOfFree
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