A review is givn on preparation of rare earth halides and openation principls,development status, technological problems in manufacture and development approches of the metal halide lamp.

• 扼要评述了金属卤化物灯的工作原理、稀土卤化物的制备、金属卤化物灯的发展情况、制灯工艺中存在的问题和开发途径。