High-pressure mercury vapor discharge lamp
AssigneeKoninklijke Philips Electronics N.V.
InventorsHanns Fischer, Dieter Leers, Bernd Engelbrecht
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Abstract
The invention relates to a high-pressure mercury vapor 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).
Claims10
A high-pressure mercury-vapor discharge lamp (1, 21, 41) comprising an envelope (2, 22, 42) made from high-temperature-resistant material, which contains two electrodes (12, 13, 32, 33, 52, 53) made from tungsten and a filling in a discharge space (14, 34, 54), which filling essentially consists of mercury, rare gas, and a halogen that is free in the operating condition;
- characterized in that the envelope (2, 22, 42) has a second space (15, 16, 35, 55).
Dependencies are inferred from the claim text.