| 摘要 |
Mercury-free metal halide lamp has a filling containing hafnium and/or zirconium halide for voltage gradient formation and tungsten cycle promotion. A mercury-free metal halide lamp has a filling comprising a noble gas as buffer gas, a compound (HZH) of a halogen (X) and Hf and/or Zr (HZM) for voltage gradient formation and cycle promotion, a light generating metal halide and a further easily evaporated metal halide as a voltage gradient former, the HZH content being≥3 mu mol/cm<3> and the ratio (X + Y)/HZM being 5-15. |
