Electric lamp and discharge devices: systems – Cathode ray tube circuits – Plural concentrating – accelerating – and/or de-accelerating...
Patent
1982-01-29
1986-10-28
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Plural concentrating, accelerating, and/or de-accelerating...
313414, H01J 2946, H01J 2956
Patent
active
046201335
ABSTRACT:
Compact deflection yoke in self-converging display system encircles adjoining segments of neck and funnel sectons of color picture tube having close beam spacing (200 mils) in electron gun to achieve low S-spacing dimension between converging beams in deflection center plane. Neck diameter is sufficiently large (1145 mils) to accommodate main focusing lens having major transverse dimension more than three and half times the beam spacing in the electron gun. Main focusing lens is formed between final focus electrodes having recessed apertures at juxtaposed ends. Walls of successive recesses have "racetrack"-like and "dogbone"-like contours. Asymmetric beam forming lenses provide each beam traversing the main focusing lens with asymmetric cross-section having relatively reduced vertical dimension.
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"New Color Picture Tube System for Portable TV Receivers", by Barbin and Hughes, in IEEE Transactions on Broadcast Television Receivers, vol. 18, 1972, pp. 193-200.
Barkow William H.
Hughes Richard H.
Morrell Albert M.
Blum Theodore M.
Meagher William H.
Rasmussen Paul J.
RCA Corporation
Whitacre Eugene M.
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