Patent ID: 7350939

Claim:
A projection lamp, comprising: a light gathering reflector having an alignment lip and a reflective internal surface with a focus; an arc lamp including a light generating portion and a connection portion, the connection portion to electrically couple the light generating portion to a power source; and a substantially ring-shaped alignment structure sized to fit around the connection portion of the arc lamp so as to be moveable along a longitudinal axis of the connection portion of the arc lamp, the substantially ring-shaped alignment structure being selectively securable directly to a selected one of a plurality of different securement locations along the longitudinal axis of the connection portion when the ring-shaped alignment structure is fit around the connection portion of the arc lamp, where the substantially ring-shaped alignment structure abuts the alignment lip of the light gathering reflector such that the location of the alignment structure on the connection portion determines a relative position of the light generating portion to the focus of the light gathering reflector.