The invention relates to a scanning
system (1), having a transmitting path (10), a receiving path (12), a
transmitter (11), a
receiver (13) and a rotating scanning device (2). The
transmitter (11) emits
radiation (3), which propagates along an
optical axis on the transmitting path (10). The
radiation (7) received from the target object (4) is detected by the
receiver (13) on the receiving path (12). Furthermore, the rotating scanning device (2) comprises an optical unit (30) and a rotating deflecting unit (33), which deflects the
radiation of the transmitting path (10) and of the receiving path (12). The optical unit (30) has a first focusing apparatus (31) and a rotating second focusing apparatus (32). The movements of the rotating deflecting unit (33) and of the rotating second focusingapparatus (32) occur synchronously in order to ensure alignment of the deflected radiation with the second focusing apparatus (32). Furthermore, the first focusing apparatus (31) images the radiation(3) emitted by the
transmitter (11) onto the rotating deflecting unit (33) in such a way that the
beam diameter at the rotating deflecting unit (33) is reduced. In addition, the rotating deflecting unit (33) deflects the radiation (3) onto the rotating second focusing apparatus (32), and the rotating second focusing apparatus (32) collimates the radiation (3) toward the target object (4). The rotating second focusing apparatus (32) images the radiation (7) received from the target object (4) onto the rotating deflecting unit (33) in such a way that the
beam diameter at the rotating deflectingunit (33) is reduced, and the rotating deflecting unit (33) deflects the received radiation (7) to the
receiver (13).