Exposure device for making a stripe screen on a faceplate of a c

Details Exposure device for making a stripe screen on a faceplate of a c Exposure device for making a stripe screen on a faceplate of a c

1977-12-08

1980-10-07

Gonzales, John

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Physical developing

430 24, 430 26, G03B 4100, G03C 500

Patent

active

042265134

ABSTRACT:
An exposure device for making a stripe screen on a faceplate of a color cathode ray tube which comprises an elongated light source; first and second correction lenses disposed above the light source in the order mentioned as counted from said elongated light source; and a table designed to carry a panel section of the color cathode ray tube and bored with an opening facing the second correction lens, and wherein the first correction lens has a lenticular plane enabling a virtual image of the light source to be rotated according to the direction in which an image of the light source is to be projected through the prescribed angle defined by the curvature of the shadow mask and the apparent angle of spatial displacement of an image of the elongated light source projected through the second correction lens; and the second lens has a lenticular plane enabling said virtual image to be projected on a photosensitive layer of the panel section aligned with the locus of electron beams of the color cathode ray tube through the apertures of a shadow mask fitted to said panel section.

REFERENCES:
patent: 3900854 (1975-08-01), Osakabe et al.
patent: 3925700 (1975-12-01), Saito
patent: 4001842 (1977-01-01), Suzuki et al.
patent: 4078239 (1978-03-01), Prazak et al.
patent: 4099848 (1978-07-01), Osakabe

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