| 摘要 |
PURPOSE: To easily manufacture a tungsten halogen lamp having an excellent yield by supporting and constituting a tantalum getter material whose hydrogen absorbing quantity is not more than specific mol/mg in the right place of a metallic member inside of a tubular bulb. CONSTITUTION: A sealing part 2 is formed on one end of quartz glass 1, and a pair of metallic foils 3 such as molybdenum and an internal lead-in wire 5a connected to one end of a tungsten filament 4 stretched along the tube axis and the other end of the other internal lead-in wire 5b juxtaposed on the filament, are integrally embedded in this sealing part 2. A pair of external lead-in wires connected to the metallic foils 3 are respectively connected to terminal parts of a base 6. A getter material 7 composed of a tantalum piece is supported in an upper part of the internal lead-in wire 5b. A tantalum getter material whose hydrogen absorbing quantity is not more than, for example, 3.3×10<-8> mol/ mg is supported and constituted in the right place of a metallic member inside of a tubular bulb. Therefore, a tungsten halogen lamp having an excellent yield can be easily manufactured.
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