Glow discharge lamp with incandescent filament

Details Glow discharge lamp with incandescent filament Glow discharge lamp with incandescent filament

1990-12-07

1991-11-19

Pascal, Robert J.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Filament, electric heater, or resistance in shunt with the...

315 47, 315 62, 315 66, 315 73, 313 9, 313595, 313619, H05B 4100

Patent

active

050668927

ABSTRACT:
A glow discharge lamp includes a sealed lamp envelope containing a noble gas and mercury, a cathode and an anode disposed in the lamp envelope and an incandescent filament for emitting visible light for illumination immediately upon application of power and for emitting little or no visible light after a glow discharge is formed between the cathode and the anode. The filament, the cathode and the anode are electrically connected in series. The lamp envelope typically includes a phosphor coating for emission of visible light upon absorption of ultraviolet radiation from the glow discharge. An optional switch can be used for disconnecting the filament during steady state operation of the glow discharge lamp.

REFERENCES:
patent: 1925648 (1933-09-01), Spanner
patent: 2560933 (1951-07-01), Chun et al.
patent: 3215881 (1965-11-01), Waymouth
patent: 3521122 (1970-07-01), Peek, Jr.
patent: 3849699 (1974-11-01), Roche
patent: 3878416 (1975-04-01), Roche et al.
patent: 4268780 (1981-05-01), Roche et al.
patent: 4278916 (1981-07-01), Regan et al.
patent: 4329622 (1982-05-01), Corona et al.
patent: 4939417 (1990-07-01), Biblarz et al.

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