Patent ID: 7687979

Claim:
An electric lamp/reflector unit, capable of operating at a power greater than 68 W, comprising: a reflector body including a reflector portion having a concave reflecting surface with an optical axis and, integral therewith, a hollow neck-shaped portion about the optical axis, an electric lamp comprising: (a) a light-transmitting lamp vessel, said lamp vessel comprising a quartz-glass wall which encloses a cavity of a predetermined, in general, spherical or elliptical shape with a geometric center, said wall being at least partly provided with an infrared-reflecting and visible light-transmitting coating, and said cavity accommodating a substantially linear electric light source, (b) first and second metal foils which are entirely embedded in the wall and connected to the electric light source, (c) a first end portion and a second end portion which are arranged so as to be opposite to each other and which both comprise a seal, wherein said second end portion is above the neck-shaped portion and is within the reflector portion, (d) first and second current conductors respectively connected to the embedded first and second metal foils through respective seals of the first and second end portions, wherein said current conductors issues from the lamp vessel to the exterior, (e) an electroconductive connector that is coupled to the second current conductor issuing from the second end portion, (f) a metal positioning member in the neck-shaped portion which holds the lamp vessel and through which the seal of the first end portion is passed, and (g) a ceramic insert beneath the metal positioning member and through which the seal of the first end portion and the electroconductive connector are passed, wherein the ceramic insert is dimensioned such that a lateral thickness of the ceramic insert between the electroconductive connector and a closest outer wall of the ceramic insert is greater than a distance between the electroconductive connecter and a portion of the optical axis on which the first end portion is situated, and the electric lamp is arranged in the reflector body in such a manner that the first end portion is at least partly situated in the neck-shaped portion, the cavity is situated within the reflecting portion, the electric light source is predominantly situated on the optical axis, and the ceramic insert is effective to dissipate heat from the first end portion during operation of the lamp.