Higher efficiency incandescent lighting units

Details Higher efficiency incandescent lighting units Higher efficiency incandescent lighting units

1983-08-01

1985-10-15

Kellogg, Arthur

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Load device and impedance

313579, 313635, H01J 744

Patent

active

045477043

ABSTRACT:
An improved high efficiency general service incandescent lighting unit is disclosed. The lamp has coaxial outer and inner envelopes. The inner envelope has a low voltage filament coaxially disposed therein, a halogen gas atmosphere and a fill-gas at a high pressure. The outer envelope has a coating of a light transmissive reflective infrared film on its inner surface. Further disclosed are various control systems for reducing a typical 120 v. A.C. voltage and applying the reduced A.C. or D.C. voltage across the low voltage filament within the inner envelope.

REFERENCES:
patent: 3418512 (1968-12-01), T'Jampens et al.
patent: 4473776 (1984-09-01), Peters
patent: 4480212 (1984-10-01), Monahan et al.

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