Patent ID: 6943362

Claim:
An infrared radiation source comprising a radiation-transparent, gas-tight tube ( 2 ) of electrically insulating material, and a heat conductor ( 3 ) comprising carbon strip arranged in the tube, the heat conductor having two ends which are respectively electrically and mechanically connected to bushings ( 4 a , 4 b ), wherein the bushings comprise at least one metal selected from the group consisting of molybdenum, tungsten and tantalum, the bushings being respectively connected via current feed-through leads ( 8 a , 8 b ) with electrical connections ( 10 a , 10 b ) projecting from the tube, and wherein the two ends of the heat conductor are respectively connected to one of the bushings by a metallic solder ( 6 ) comprising at least one metal selected from the group consisting of titanium, zirconium and hafnium.