HIGH-PRESSURE MERCURY VAPOUR DISCHARGE LAMP

摘要

High-pressure mercury vapour discharge lamp. A high-pressure mercury vapour discharge lamp, whose envelope (2) has two electrodes (9, 10) of tungsten and a filling containing besides rare gas a quantity of mercury larger than 0.2 mg/mm3 at a mercury vapour pressure of more than 200 bar and at least one of the halogens chlorine, bromine or iodine in a quantity between 10-6 and 10-4 .mu.mol/mm3, the wall load in operation being higher than 1 w/mm2. Figure 1.