Method of measuring mask misregistry in kinescope panel assembli

Details Method of measuring mask misregistry in kinescope panel assembli Method of measuring mask misregistry in kinescope panel assembli

1985-12-24

1988-07-19

Fields, Carolyn E.

Radiant energy

Luminophor irradiation

Methods

2504611, 445 63, H01J 942, G01N 2164

Patent

active

047587288

ABSTRACT:
The misregistration of kinescope panel assemblies is measured by passing UV through the shadow mask to the phosphor screen. The lighthouse optics are set for exposure of one of the three phosphor colors, such as green. The intensity of light emanating from the panel is measured for a plurality of locations on the screen, and for a plurality of incremental positions of the panel assembly with respect to the lighthouse light source. The position of maximum intensity of light emanating from the panel is recorded and used to calculate the misregistration between the phosphor screen and the shadow mask.

REFERENCES:
patent: 3514208 (1970-05-01), Levin
patent: 4001877 (1977-01-01), Simpson
patent: 4286164 (1981-08-01), Ragland, Jr.
patent: 4525735 (1985-06-01), Krufka
patent: 4584481 (1986-04-01), Matey

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