Patent ID: 7030968

Claim:
Device for the three-dimensional recording of a scene ( 4 ), comprising a laser emitter ( 20 ), means ( 14 , 42 , 200 , 202 , 204 , 206 , 210 , 212 , 224 , 226 ) for scanning along first and second rotation axes ( 16 , 44 ) in order to scan the scene ( 4 ) using a laser beam emitted by the laser emitter ( 20 ), a photosensitive receiver ( 46 ) for receiving an image of a spot ( 52 ) created by the laser beam on the scene ( 4 ), means ( 38 , 50 ) for focussing the laser beam backscattered by the scene ( 4 ) towards the photosensitive receiver ( 46 ), first measuring means ( 214 , 226 ) for measuring the orientation of the beam leaving the scanning means ( 14 , 42 , 200 , 202 , 204 , 206 , 210 , 212 , 224 , 226 ) and second measuring means ( 24 , 28 , 32 , 34 , 48 , 314 ) for measuring the distance between the device and the spot by laser telemetry, the said second measuring means comprising a splitter plate ( 32 ) for splitting the emitted beam and the beam backscattered by the scene ( 4 ), characterized in that the focussing means ( 38 , 50 ) comprise a convergent optical system ( 38 ) combined with a divergent optical system ( 50 ) for increasing the focal length of the convergent optical system, thus forming a teleobjective, and in that the scanning means ( 14 , 42 , 200 , 202 , 204 , 206 , 210 , 212 , 224 , 226 ) include at least one mirror ( 42 ) placed in the path of the emitted and backscattered laser beams between the focussing means ( 38 , 50 ) and the scene ( 4 ).