METAL HALIDE LAMP AND METHOD OF MAKING THE SAME

摘要

A metal halide lamp is made by coating the inner surface of a luminous tube made of quartz glass with hafnium oxide, uranium oxide, hafnium oxide partially stabilized with yttrium oxide or uranium oxide partially stabilized with yttrium oxide by introducing therein a vapour of metal chelate containing hafnium (Hf), uranium (U) or yttrium (Y) and oxygen (O2), nitrogen suboxide (N2O) or ozone (O3) as a reaction gas, and sealing the inside of the luminous tube with a halogenide of alkali metal, mercury and argon.