| 摘要 |
The invention relates to an irradiation device with a radiation source (2) and a filter (3) arranged in the beam path. The filter has two plates (4, 5) which enclose a hollow space (14) in which there is provided a medium selectively influencing the radiation spectrum, preferably water. The plates are supported by a frame made of a good heat-conducting material, which cools the medium enclosed in the hollow space. In order to improve the cooling, at least one of the plates (5) is of pot-shaped design with a stepped edge (8). The clear distance (b) between the edges (7, 8) of the plates (4, 5) held in the frame (6) is greater than the clear distance (c) between the middle areas (11) of the plates (4, 5). <IMAGE> |
