Cathode-ray tube with interference filter and projection televis

Details Cathode-ray tube with interference filter and projection televis Cathode-ray tube with interference filter and projection televis

1990-07-10

1991-10-15

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 60, 358 65, H04N 9160, H04N 918

Patent

active

050579126

ABSTRACT:
A projection television system comprising a cathode-ray tube having a face plate, a display screen coated with a phosphor of the type ZnS:Ag and an interference filter arranged between the display screen and the face plate.
The ZnS:Ag has an admixture which slightly increases the y-coordinate of the light emitted by the phosphor.
This enables an increased maximum luminance in the white-D-point without the y-coordinate of the light emitted by the cathode-ray tube becoming too low.

REFERENCES:
patent: 4038205 (1977-07-01), Minnier et al.
patent: 4539506 (1985-09-01), Ohtani et al.
patent: 4804882 (1989-02-01), Takahara et al.
patent: 4807014 (1989-02-01), Van Gorkum et al.
patent: 4859902 (1989-08-01), De Leeuw et al.
patent: 4874985 (1989-10-01), Hase et al.
patent: 4922158 (1990-05-01), Colak

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