Electric lamp and discharge devices – Cathode ray tube – Screen
Patent
1990-06-22
1992-08-11
DeMeo, Palmer C.
Electric lamp and discharge devices
Cathode ray tube
Screen
313112, 313473, 358 73, 358237, 358253, 359580, H01J 2928, H01J 2989
Patent
active
051382229
ABSTRACT:
A projection cathode ray tube has an interference filter which is disposed at a boundary between a face plate and fluorescent layers. The interference filter is designed to be thinnest at the central area of the CRT and to become gradually thicker toward the peripheral area of the CRT, so that the CRT can produce a uniformly bright image over the central and peripheral areas. The fluorescent layers include a first layer composed of small fluorescent particles and a second layer composed of large fluorescent particles. With this first fluorescent layer, light beams emitted by the second fluorescent layer can be prevented from being reflected in multiple directions, thereby minimizing halo due to such multi-direction reflection of the light beams.
REFERENCES:
patent: 4310784 (1982-01-01), Anthon et al.
patent: 4634926 (1987-01-01), Vriens et al.
patent: 4642695 (1987-02-01), Iwasaki
patent: 4647812 (1987-03-01), Vriens et al.
patent: 4683398 (1987-07-01), Vriens et al.
patent: 4798994 (1989-01-01), Rijpers et al.
patent: 4804884 (1989-02-01), Vriens et al.
patent: 4831307 (1989-05-01), Takenaka et al.
Kondo Mitsushige
Shikama Shinsuke
Toide Eiichi
DeMeo Palmer C.
Mitsubishi Denki & Kabushiki Kaisha
Patel Ashok
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