Slotted shadow mask having apertures spaced to minimize moire

Details Slotted shadow mask having apertures spaced to minimize moire Slotted shadow mask having apertures spaced to minimize moire

1979-11-09

1982-04-20

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

H01J 2907, H01J 2932

Patent

active

043261477

ABSTRACT:
A color picture tube having a shadow mask is disclosed in which, with a view to making occurrence of moire imperceptible, electron beam transmissive apertures of the shadow mask are formed in such an array that a plurality of trains of the electron beam transmissive apertures each arrayed in the vertical direction with a pitch P.sub.y are juxtaposed to one another, wherein, assuming that the order of the harmonics is represented by n and m is an odd number smaller than 2n, there exist the relations (n-0.5)P.sub.l .ltoreq.P.sub.y .ltoreq.(n+0.05)P.sub.l and (m-0.35)P.sub.y /2n.ltoreq..DELTA.y.ltoreq.(m+0.35)P.sub.y /2n among the pitch P.sub.y, pitch P.sub.l of scanning lines and vertical deviation .DELTA.y between two adjacent apertures in the horizontal direction.

REFERENCES:
patent: 3766419 (1973-10-01), Barbin
patent: 3777204 (1973-12-01), Robbins et al.
patent: 3973159 (1976-08-01), Barten
patent: 3973965 (1976-08-01), Suzuki et al.

Affiliated with

Also associated with

Rating

Slotted shadow mask having apertures spaced to minimize moire does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Slotted shadow mask having apertures spaced to minimize moire, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slotted shadow mask having apertures spaced to minimize moire will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1265025