| 摘要 |
Low-pressure mercury vapor discharge lamp comprising a discharge vessel ( 10 ) having a first and a second end portion ( 12 a , 12 b), the discharge vessel ( 10 ) containing mercury and a rare gas, wherein the end portions ( 12 a , 12 b) each support an electrode ( 20 a ,20 b) arranged in the discharge vessel ( 10 ) for initiating and maintaining a discharge in the discharge vessel ( 10 ), wherein an electrode shield ( 22 a ,22 b) substantially encompasses at least one of the electrodes ( 20 a ,20 b), and wherein said electrode shield ( 22 a ,22 b) comprises an inner wall ( 23 a) and an outer wall ( 24 a), said walls ( 23 a ,24 a) being spaced apart. |
