| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-pressure discharge lamp having simple structure, and manufactured with reduced steps inexpensively while suppressing occurrence of cracks in a sealing body glass portion as much as possible to prolong the life span. SOLUTION: In the high-pressure discharge lamp 1 comprising a sealing body glass 2 of quartz glass; a sealing portion 5 formed in one body with the sealing body glass on both ends of a light emitting portion 4 having a light emitting space 3 inside; a metal foil 6 of molybdenum embedded in the sealing portion 5; and an electrode rod 7 of tungsten having a tip end positioned in the light emitting space 3 and a base end connected to the metal foil 6, a part of the electrode rod 7 in the sealing portion 5 is completely covered with a part of the metal foil 6. COPYRIGHT: (C)2008,JPO&INPIT
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