Electric lamp and discharge devices: systems – With load device temperature modifier – Automatic control of the temperature modifier
Patent
1983-03-25
1985-07-16
Chatmon, Saxfield
Electric lamp and discharge devices: systems
With load device temperature modifier
Automatic control of the temperature modifier
315115, 315116, 315151, 315158, 250205, H01J 724, H01J 1332, H01J 1974, H01J 6152
Patent
active
045299129
ABSTRACT:
The phosphor light output of a fluorescent lamp is controlled and optimized. The phosphor light output of the lamp corresponds to a particular level of either the vapor mercury or rare fill gas contained within the lamp envelope. This gas emission level is initially determined for a given system; a monitoring circuit thereafter detects any deviation from this level, generates a signal and sends it to a controller. The controller adjusts the operation of a mercury cold spot temperature-regulating device causing the cold spot temperature to increase or decrease until the optimum temperature and hence lamp phosphor light output is reestablished.
REFERENCES:
patent: 3284664 (1966-11-01), Morin et al.
patent: 3309565 (1967-03-01), Clark et al.
patent: 3786308 (1974-01-01), Browner et al.
patent: 4005332 (1977-01-01), Gallo et al.
patent: 4016450 (1977-05-01), Balekjian
patent: 4032817 (1977-06-01), Richmond
patent: 4431947 (1984-02-01), Ferriss et al.
Hammond Thomas J.
Northrup Karl A.
Chatmon Saxfield
Xerox Corporation
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