Synthetic willemite phosphors and fluorescent lamp containing th

Details Synthetic willemite phosphors and fluorescent lamp containing th Synthetic willemite phosphors and fluorescent lamp containing th

1981-08-18

1983-08-02

Cooper, Jack

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

2523016F, 428403, C09K 1146

Patent

active

043968635

ABSTRACT:
Synthetic willemite phosphor for use in fluorescent lamps in the form of particles coated with from 0.001% to 0.5% of an oxide of scandium, yttrium, lanthanum or a rare earth element. Fluorescent lamps comprising the phosphor which have improved aging qualities are also provided.

REFERENCES:
patent: 2241939 (1941-05-01), Aschermann et al.
patent: 4287257 (1981-09-01), Ohmatoi et al.

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