Phosphor distribution for helical compact fluorescent lamp

Details Phosphor distribution for helical compact fluorescent lamp Phosphor distribution for helical compact fluorescent lamp

H - Electricity

01

J

H01J 61/42 (2006.01) H01J 9/00 (2006.01) H01J 61/32 (2006.01) H01J 61/44 (2006.01) H01J 61/56 (2006.01)

Patent

CA 2170069

Abstract of the Disclosure A compact fluorescent lamp is provided in a coiled or helical configuration in order to maximize the length of discharge tubing for a given height. A non- uniform coating of phosphor is provided on the interior surface of the discharge envelope to inhibit light otherwise directed inwardly into the lamp toward a longitudinal axis of the helical configuration and redirect the light outwardly through an outer circumferential portion having a thinner phosphor coating. This results in increased light output for an given lamp geometry and lamp power.

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