Light exposure apparatus for manufacturing color picture tubes

Details Light exposure apparatus for manufacturing color picture tubes Light exposure apparatus for manufacturing color picture tubes

1974-08-22

1976-09-21

Peters, Jr., Joseph F.

G03B 4100

Patent

active

039822524

ABSTRACT:
In light exposure apparatus wherein the face plate of a color picture tube is exposed to the light from a light source through a swinging illumination intensity correcting filter, a correction lens and a color selection electrode, the effective surface of the illumination intensity correcting filter comprises a plurality of regions having different light transmitting ability, and the effect of the optical characteristics at the interfaces between the regions is arranged and substantially eliminated by the swinging motion of the illumination intensity correcting filter.

REFERENCES:
patent: 3667355 (1972-06-01), Ng et al.

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