| 摘要 |
A high pressure discharge lamp comprises a light transmitting and high temperature resistant discharge vessel 2, electrodes 8,9 of a high melting point metal, a filling of a buffer gas and metal halide additives containing only iodides or iodides and bromides as the halide or iodine or iodine and bromine as the halogen, an outer bulb, 1a and heat absorbing agents 5 selected and arranged such that the lamp has an arc output of less than 100 W/cm. The heat absorbing agents may include at least two selected from a tube encircling the vessel 2, one or more infra-red reflecting layers, and etching or sanding of the surface of the vessel 2. <IMAGE> |
