Patent ID: 7795813

Claim:
A lamp, comprising: an elongated, hollow, arc tube extending along a longitudinal axis between opposite end regions and containing a gas; a pair of electrodes spaced apart along the longitudinal axis and respectively mounted within the arc tube at the end regions thereof; a first end cap and a second end cap respectively mounted at the end regions of the arc tube; a first pair of electrical pins electrically connected to one of the electrodes; a second pair of electrical pins electrically connected to the other of the electrodes; and wherein the pins are mounted on the first end cap, and are offset relative to each other along the longitudinal axis; the first end cap comprises a mutually parallel distal semi-circular base and a proximal semi-circular base, and a barrier wall extending between the distal and proximal bases; the barrier wall comprises either an extension extending outwardly therefrom along the proximal base or a recess extending inwardly therefrom along the distal base; the extension has a height that is equal to the distance between the distal base and the proximal base or the recess has a depth that is equal to the distance between the distal base and the proximal base; and the first pair of pins extend through the distal base and the second pair of pins extend through the proximal base.