Magnetic shield with cathode ray tube standoff for a computer mo

Details Magnetic shield with cathode ray tube standoff for a computer mo Magnetic shield with cathode ray tube standoff for a computer mo

1992-12-24

1995-03-21

Pascal, Robert J.

Electric lamp and discharge devices: systems

With electromagnetic wave radiation preventing or shielding...

315 8, 313402, 313479, H01J 152

Patent

active

053999398

ABSTRACT:
A shield for a computer monitor comprises a hollow cylindrical magnetic sleeve disposed around at least a portion of the yoke windings of the monitor. The sleeve has a diameter greater than the diameter of the yoke windings. A cathode ray tube (CRT) standoff for the shield provides for ease of shield installation and continued operation of the monitor within specification without impairing image integrity (i.e. distortion, color impurity or brightness). The standoff creates a specific distance (critical threshold) between the glass bell of the CRT and the shield that prevents image distortion that cannot be overcome through adjusments of the monitor controls (critical interference).

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