Electric lamp and discharge devices – Cathode ray tube – Screen
Patent
1987-03-23
1991-02-26
Wieder, Kenneth
Electric lamp and discharge devices
Cathode ray tube
Screen
313474, 313480, H01J 2920, H01J 2986
Patent
active
049964593
ABSTRACT:
A color cathode-ray tube having a face glass (1) coated with a plurality of phosphors (6B, 6G, 6R) different in luminescent color, the face glass (1) containing a colorant imparting a selective characteristic for absorbing light in the wavelength regions between the luminescent wavelength regions of the phosphors, (6B, 6G, 6R) and a colorant suppressing the light transmittance in the visible region, wherein the light transmittances in the luminescent wavelength regions shorter than the highest-visibility wavelength region are at least about 5% lower than the light transmittance in the highest-visibility region, while the light transmittances in the luminescent wavelength regions longer than the highest-visibility wavelength region is higher than the light transmittance in the highest-visibility region.
REFERENCES:
patent: 2757304 (1956-07-01), Leverenz
patent: 4390637 (1983-06-01), Daiku
patent: 4405881 (1983-09-01), Kobayashi
patent: 4424467 (1984-01-01), Masuda et al.
patent: 4512912 (1985-04-01), Matsuda et al.
"Optical Characteristics of Cathode Ray Tube Screens", JEDEC Publication No. 16-B, Aug. 1971, p. 118.
Y. Shimizu et al., "A New Color Picture Tube with Improved Color Fidelity and Contrast," IEEE Transactions on Consumer Electronics, vol. CE-27, pp. 486-492, Aug. 1981.
Mitsubishi Denki Kabushiki Kaishi
Wieder Kenneth
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