Light exposing prism system for use in forming phosphor plane of

Details Light exposing prism system for use in forming phosphor plane of Light exposing prism system for use in forming phosphor plane of

1978-08-07

1980-07-08

Hayes, Monroe H.

G03B 4100

Patent

active

042114772

ABSTRACT:
A light exposing prism system for use in light exposure process for forming a phosphor plane of a color picture tube is disclosed. The prism system is arranged between a panel of the color picture tube and a linear exposing light source and includes a plurality of small prisms which are arranged transversely to an axial line extending through a center of the panel and a center of the light source and to a longitudinal axis of the light source. The prism system is adapted to be oscillated in the direction of arrangement of the small prisms. Pitch of the arrangement of the small prisms is within a range of 0.05 mm to 3.0 mm, preferably 1.0 mm to 3.0 mm.

REFERENCES:
patent: 3888673 (1975-06-01), Suzuki et al.
patent: 4052122 (1977-10-01), Yamazaki et al.
patent: 4110760 (1978-08-01), van Nes

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