| 摘要 |
PROBLEM TO BE SOLVED: To provide a high pressure discharge lamp with excellent characteristics. SOLUTION: The high pressure discharge lamp 100 is provided with a luminous tube 10 with a pair of electrodes (12, 12') arranged in opposition, and inside the luminous tube 10, at least mercury and halogen are contained, and that, at least one kind of metal selected from among the group of Pt, Ir, Rh, Ru, Re exists.
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