| 摘要 |
The invention relates to a high-pressure discharge lamp for use in the vertical position, having a tubular ceramic discharge vessel, the electrodes being connected to current lead-through members which have been provided one at each end of the discharge vessel, a first, upper current lead-through member consisting of material which is resistant to attack by halogens and/or halides, for example molybdenum, and a second, lower current lead-through member comprising a hydrogen-permeable material, for example niobium. |
