An improved x-ray system having a DAP measurement chamber is provided. An x-ray system has a radiation path, which extends between an x-ray radiation source and a detector. A beam splitter is arranged in the radiation path, the beam splitter being used to inject visible light into the radiation path. The DAP measurement chamber is arranged in the radiation path between the x-ray radiation source and the beam splitter. An improved collimator having a DAP measurement chamber is also provided.
