Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1980-03-18
1982-02-09
La Roche, Eugene R.
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313184, H01J 6144
Patent
active
043151930
ABSTRACT:
High-pressure mercury-vapor lamp incorporates a special phosphor mixture on the interior surface of the outer envelope. The phosphor mixture comprises predetermined proportions and predetermined amounts of blue-violet-emitting phosphor, blue-green-emitting phosphor and red-emitting phosphor. When the composite emission of the phosphor mixture is combined with the visible light generated by the high-pressure mercury discharge, both the color rendering index and the light output of the lamp are substantially improved.
REFERENCES:
patent: 3602758 (1971-08-01), Thornton
patent: 3630946 (1971-12-01), Ropp et al.
patent: 3937998 (1976-02-01), Verstegen et al.
patent: 4038204 (1977-07-01), Wachtel
patent: 4065688 (1977-12-01), Thornton
Nathan Sohn, Fluorescence Properties of Alkaline Earth Tellurates, Journal of the Electrochemical Society 120(5), pp. 660-664, 1973.
La Roche Eugene R.
Palmer W. D.
Westinghouse Electric Corp.
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