Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1979-12-07
1982-07-06
Demeo, Palmer C.
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
313412, 313413, 313414, H01J 2951, H01J 2956
Patent
active
043385419
ABSTRACT:
A multiple beam cathode ray tube having diminished off-axis aberrations and a reduced length. A tube having a flat or planar electron beam emitter means, focussing means and deflection means is provided. A novel accelerating means is provided for accelerating the emitted beams while causing them to converge towards a crossover point which is located not closer to the screen of the tube than the deflection means. The maximum off-axis distance of the beams when traversing the focussing and deflection means is reduced, and the off-axis aberrations are correspondingly diminished.
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DeMeo Palmer C.
International Business Machines - Corporation
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