Halogen incandescent lamp

摘要

Halogen incandescent lamps having at least two filaments are provided with a hard-glass lamp vessel. In the vacuum-tight seal of the vessel molybdenum wire current leadthrough conductors are incorporated which form one assembly with internal and external current conductors. In spite of large differences between the coefficients of expansion of the glass and the molybdenum, the lacking of rotationally symmetric geometry at the area of the current leadthroughs and the high thermal load of the lamp vessel seal, the lamps have proved to be very reliable.