| 摘要 |
Apparatus comprises a UV-transparent glass tube (10) having a hollow inner space (40) and a tube wall with a tube inner wall (70) and a tube outer wall (60), and at least one UV light source. The UV transparent glass tube in at least one position, comprises an indentation in the inner space and/or a recess in the tube outer wall. At least one UV light source is arranged in the indentation and/or the recess. |
