Patent ID: 6844676

Claim:
A discharge lamp comprising an outer bulb enclosing a single discharge vessel, said single discharge vessel enclosing an arc discharge space and including within said discharge space an ionizable material comprising a metal halide and capable of sustaining an arc; a first and second discharge electrode feedthrough means; and a first and second current conductor connected to said first and second discharge electrode feedthrough means, respectively; said lamp having a frame wire structure which comprises two frame wires being spirally curved around said single discharge vessel in a direction oriented substantially parallel to the longitudinal axis of said single discharge vessel, wherein the distance between the single discharge vessel and each of said two frame wires is substantially equal, wherein each of said two frame wires conducts one-half of a total current supplied to said single discharge vessel, and wherein said two frame wires are connected to respective ones is of said first and second current conductors, extending between said single discharge vessel and said outer bulb, and effective to reduce arc bending, regardless of the orientation of the lamp during operation in a fixture.