发明授权
US07965042B2 Metal halide lamp and lighting apparatus using the same 有权
金属卤化物灯及使用其的照明装置

Metal halide lamp and lighting apparatus using the same
摘要:
A metal halide lamp according to the present invention includes: an outer tube 2; an inner tube 3 that is provided in the outer tube 2, has a sealing portion 10 in at least one end portion, and is made of quartz glass; an inner tube 3 provided in the outer tube 2; and an arc tube 4 provided in the inner tube 3, wherein assuming that the outer tube 2 has a maximum outer diameter A (mm), the inner tube 3 has a maximum outer diameter B (mm), and the metal halide lamp 1 consumes P (W) of power, the following relationships are satisfied: 0.06P+15.8≦A≦25, 0.05P+9.0≦B, and 1.14≦A/B, where P satisfies 20 W≦P≦130 W.
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