Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1996-03-28
1998-10-20
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
313444, H01J 2950, H01J 2946
Patent
active
058251235
ABSTRACT:
A method and apparatus for deflecting a charged particle stream. The system can include plural vertical and horizontal deflection plates, although a single vertical deflection plate and reference potential plane is preferred. Both orthogonal and preferably tilted display screens are employed to receive the scan. The particle stream is injected offset from a centered position and the stream is scanned asymmetrically away from one deflection plate. A computer program is employed to calculate the offset position. An external quadrupole is employed to correct any aberration in the particle stream. In one embodiment, the system comprises a cathode ray tube.
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Haynes Mack
O'Shea Sandra L.
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