One piece astigmatic grid for color picture tube electron gun an

Details One piece astigmatic grid for color picture tube electron gun an One piece astigmatic grid for color picture tube electron gun an

1979-11-15

1981-06-09

Mullins, James B.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

29 2517, H01J 2946

Patent

active

042727006

ABSTRACT:
A one-piece control grid for functioning as an astigmatic lens in an electron gun has an arcuate slot formed in the face of the grid. A suitable beam aperture is provided at the bottom of the slot.

REFERENCES:
patent: 3363136 (1968-01-01), Pakswer

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