Color cathode ray tube having interference filter with different

Details Color cathode ray tube having interference filter with different Color cathode ray tube having interference filter with different

1988-03-31

1991-02-05

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Screen

313466, 358250, 358253, 350311, 350317, H04N 572

Patent

active

049908243

ABSTRACT:
A color cathode ray tube of the shadow mask or beam index type in which the screen structure applied to the faceplate has a plurality of triplets of optical interference filter stripes which are adapted to pass red (R), green (G) and blue (B) light produced by a homogeneous cathodoluminescent screen layer. The usual aluminium layer may be applied to the screen layer. The optical interference filter stripes may have short wave pass filters, band pass filters or a combination of both types. The short wave pass filter stripes may have modified quarter wavelength multilayer dielectric filters and the bandpass filter may have a Fabry-Perot filter.

REFERENCES:
patent: 2657331 (1953-10-01), Parker
patent: 2728026 (1955-12-01), van Overbeck
patent: 3748515 (1973-07-01), Kaplan
patent: 4683398 (1987-07-01), Vriens et al.

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