A DEVICE FOR THE TREATMENT OF SKIN BY MEANS OF A RADIATION BEAM

摘要

The invention relates to a device (1) for the treatment of skin (13) by means of a radiation beam (5). The device comprises a radiation source (9) for generating the radiation beam, a beam exit window (15), an optical detecting system (31) for determining a target position (22) of the radiation beam relative to the skin, and a beam manipulator (17) for positioning the radiation beam in the target position. The radiation beam and the detecting system have a first optical axis (45) and a second optical axis (47), respectively. According to the invention, seen from the radiation source (9) towards the beam exit window (15), the first and the second optical axis (45, 47) coincide starting at a position (S) between the radiation source and the beam manipulator (17). As a result, the optical path via which the radiation beam (5) is guided towards the skin (13) and the optical path via which the detecting system (31) determines the target position (22) are manipulated identically by the beam manipulator (17), so that an error in the position of the optical components of the beam manipulator does not affect the accuracy with which the target position (22) is set.