Display tube with deflection unit comprising field deflection co

Details Display tube with deflection unit comprising field deflection co Display tube with deflection unit comprising field deflection co

1994-11-01

1996-04-09

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313426, 335213, H01J 2970, H01F 500

Patent

active

055064698

ABSTRACT:
Display tube comprising an electromagnetic deflection unit with field deflection coils of the saddle type having a lying gun-sided lobe which is provided with a plurality of sub-assemblies each comprising two longitudinal conductor groups which are connected at their gun side by means of a connection group of conductors lying flush with the longitudinal conductor groups, the first sub-assembly being arranged within the second, the second within the third, and so forth. Field coma errors, field astigmatism (isotropic and anisotropic) and north-south raster errors can be simultaneously minimized by means of such field deflection coils.

REFERENCES:
patent: 4464643 (1984-08-01), Meershoek
patent: 4874983 (1989-10-01), Sluyterman
patent: 4937931 (1990-07-01), Jacobs et al.
patent: 4962333 (1990-10-01), Sluyterman
patent: 5001390 (1991-03-01), Vink et al.
patent: 5013964 (1991-05-01), Vink et al.
patent: 5077533 (1991-12-01), Klingelhofer
patent: 5121028 (1992-06-01), Milili

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