HIGH-PRESSURE MERCURY VAPOUR DISCHARGE LAMP

摘要

The invention relates to a high-pressure mercury vapour discharge lamp (1) with an envelope (2) made from high-temperature-resistant material, which contains two electrodes (12, 13) made from tungsten and a filling in a discharge space (14), which filling essentially consists of mercury, rare gas, and a halogen that is free in the operating condition. According to the invention, the envelope (2) has a second space (15, 16).