The invention relates to a sensor arrangement (13.1) comprising a radiation-conducting substrate (13.9), said arrangement having a plurality of sensor fields (13.4) and separating regions (13.5) for separating the individual sensor fields (13.4) from the respectively adjacent sensor fields (13.4). Said separating regions (13.5) are formed by a separating agent layer (13.10) that causes a reflectivity lower than 0.5 for radiation from the substrate on the interface between the separating agent layer (13.10) and the substrate (13.9), at least in a first region (13.8) adjacent to the interface between the separating agent layer (13.10) and the substrate (13.9), and an extinction higher than 0.95 at least in a second region (13.7) located above the first region (13.8), on the side opposing the substrate (13.9).
