Color television tube incorporating correction of coma defects o

Details Color television tube incorporating correction of coma defects o Color television tube incorporating correction of coma defects o

1986-08-07

1988-02-16

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, H01J 7951, H01J 7976

Patent

active

047257571

ABSTRACT:
A color tube of the automatic convergence kind comprises three coplanar electron beams, with magnetic coma defect correction elements situated to the rear of the deflector unit. For the case where these defects are of small size, of the order of 1 mm or less in each direction, and of opposite sense in the horizontal and vertical directions, the correcting elements are formed by four plates of rectangular shape and whose plane is perpendicular to the axis of the tube. The plates are situated above and below each of the lateral beams and one dimension of each of the plates affects the amplitude of the correction in one direction, and the other dimension affects the coma correction in the other direction.

REFERENCES:
patent: 4142131 (1979-02-01), Ando et al.
patent: 4225804 (1980-09-01), Bekaert et al.
patent: 4370593 (1983-01-01), Sweigart et al.
patent: 4457733 (1984-07-01), Gioia et al.
Patents Abstracts of Japan, vol. 6, No. 160, (E-126), (1038), Aug. 21, 1982 & JP A 57 80640, 20-05-1982.

Affiliated with

Also associated with

Rating

Color television tube incorporating correction of coma defects o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color television tube incorporating correction of coma defects o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color television tube incorporating correction of coma defects o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2222568