Halo-reducing faceplate arrangement

Details Halo-reducing faceplate arrangement Halo-reducing faceplate arrangement

1984-12-12

1986-12-30

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Screen

350163, 358253, H01J 2928, H01J 2989

Patent

active

046331310

ABSTRACT:
A faceplate arrangement for a monochromatic cathode ray tube includes a compound filter disposed between the faceplate and a light scattering luminescent screen. The compound filter includes a multilayer interference edge filter adjacent the screen and a multilayer matching filter adjacent the faceplate. The edge filter reflects back into the screen light rays received from the screen which would contribute to halo, and the matching filter matches the optical admittances of the edge filter and the faceplate.

REFERENCES:
patent: 3902012 (1975-08-01), Dalton et al.
patent: 4310783 (1982-01-01), Temple

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