| 摘要 |
PROBLEM TO BE SOLVED: To provide a high pressure discharge lamp of which, pressure resistant property is improved by surely and easily preventing the generation of crack when sealing an electrode assembly. SOLUTION: The high pressure discharge lamp comprises a glass bulb member 2, and a pair of electrode assemblies 6 sealed at both end parts of the bulb member 2. The electrode assembly 6 is formed by serially connecting an electrode rod 3, a molybdenum foil 4, and a lead wire 5. The electrode assembly 6 is sealed to the bulb member 2 in a state that the part to be sealed to the bulb member 2 is sealed in an intermediate member 7. The thermal expansion coefficient of the intermediate member 7 mediates between that of the electrode rod 3 and that of the bulb member 2. COPYRIGHT: (C)2004,JPO
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