High intensity discharge lamp with enhanced dimming characteristcs
AssigneeGeneral Electric Company
InventorsAgoston Boroczki, Csaba Horvath
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Abstract
A high intensity discharge lamp comprises a discharge vessel and two electrode rods having substantially flat ends facing to each other in opposite positions within the discharge vessel. A spiral coil of wire is wound at least on a part of the surface of at least one of the electrode rods. The spiral coil protrudes over said end of the corresponding electrode rod and thus forms a hollow cavity for extending dimmable wattage range of the lamp.
Claims21
A high intensity discharge lamp comprising a discharge vessel, two electrode rods having substantially flat ends facing to each other in opposite positions within the discharge vessel, a spiral coil of wire being wound at least on a part of the surface of at least one of the electrode rods, the spiral coil protruding over said end of the corresponding electrode rod and thus forming a hollow cavity for extending dimmable wattage range of the lamp.
An electrode for high intensity discharge lamps comprising an electrode rod having a substantially flat end, a spiral coil of wire being wound at least on a part of the surface of the electrode rod, the spiral coil protruding over said end of the electrode rod and thus forming a hollow cavity for extending dimmable wattage range of the lamp.
Dependencies are inferred from the claim text.