Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1994-11-30
1998-06-09
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
313414, H01J 2950
Patent
active
057639914
ABSTRACT:
The present invention discloses an improved electron gun for a color picture tube including a main lens having a first rim electrode having a beam passing plane with holes in an incident side of the electron beam and a second rim electrode facing the first rim electrode and having a beam passing plane with holes in a departing side of the beam. A focusing electrode having a beam passing plane with holes in departing side of the beam for forming compensating astigmatism quadrupole lenses in conjunction with the first rim electrode to compensate for the astigmatism of the main lens is positioned adjacent to the first rim electrode of the main lens. Astigmatism formed between the first and second rim electrode of the main lens electrodes can be reduced by the compensating astigmatism of the quadrupole lenses.
REFERENCES:
patent: 4429252 (1984-01-01), Vieland et al.
patent: 5038073 (1991-08-01), Son
patent: 5142189 (1992-08-01), Sugahara et al.
patent: 5281896 (1994-01-01), Bae et al.
Patent Abstracts of Japan, vol. 15, No. 108 (E-1045), Mar. 14, 1991, Patent Publication No. JP-A-03 001 429, Jan. 8, 1991.
Patent Abstracts of Japan, vol. 17, No. 549 (E-1443), Oct. 4, 1993, Patent Publication No. JP-A-05 159 719, Jun. 25, 1993.
Campbell Francis Joseph
Yoon Hyo-jong
Haynes Mack
O'Shea Sandra L.
Orion Electric Co.
LandOfFree
Electron gun for a color picture tube does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electron gun for a color picture tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron gun for a color picture tube will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2204132