Method of flicker-free lighting hot-cathode low-pressure rare ga

Details Method of flicker-free lighting hot-cathode low-pressure rare ga Method of flicker-free lighting hot-cathode low-pressure rare ga

1995-02-15

1996-08-20

Gonzalez, Frank

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

315 32, 315 71, 313632, H05B 3900

Patent

active

055481876

ABSTRACT:
The present invention provides a method of lighting a hot-cathode type low-pressure rare gas discharge lamp without flicker. The method has the steps of operating, as a hot cathode, at least one of electrodes provided at both ends of a glass valve in a stable discharge state, and emitting light from a fluorescent material with the ultraviolet rays generated by the discharge of low-pressure rare gas sealed in the glass valve, or directly with visible light. The hot cathode is heated at least during lighting. In the method, the temperature of the hot cathode relative to the lamp current flowing between the electrodes is set within a region to prevent flicker in the discharge lamp.

REFERENCES:
patent: 4902933 (1990-02-01), Roberts
patent: 4914347 (1990-04-01), Osawa et al.
patent: 4972115 (1990-11-01), Osawa et al.
patent: 5338110 (1994-08-01), Byun
patent: 5432406 (1995-07-01), Brooks
Yoshiji Yoshike, "Fluorescent Xenon Glow Lamp," Toshiba Review, vol. 40, No. 12, pp. 1079-1082.
Mitsubishi Denki Giho, vol. 65, No. 4, 1991, pp. 82-86. Proceedings of 1991 Annual Conference of the Illuminating Engineering Institute of Japan, pp. 81-84.

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