LOW-PRESSURE MERCURY DISCHARGE LAMP AND ULTRAVIOLET DISINFECTION AND STERILIZATION APPARATUS

摘要

A low-pressure mercury discharge lamp comprising a sealed cavity and an indium-mercury alloy or an indium-mercury multinary alloy in the sealed cavity. The effective mass ratio of indium to mercury in the indium-mercury alloy or in the indium-mercury multinary alloy is In:Hg = 97.05:2.95 to 98.8:1.2. The low-pressure mercury discharge lamp has a compact size and a high light efficiency, allows for stable control of mercury vapor pressure at temperatures in excess of 170°C, and provides a stable light output. An ultraviolet disinfection and sterilization apparatus comprising the low-pressure mercury discharge lamp. Insofar that the cross section and the size of a disinfection chamber are reduced, the ultraviolet disinfection and sterilization apparatus can still allow for an increased ultraviolet output and a stable light output.