Patent ID: 6937375

Claim:
Scanning apparatus with an emitting part ( 1 ) that comprises a radiation source ( 11 ) for emitting a light beam (T), a rotatable prism ( 10 ) for deflecting the light beam (T), and a lens arrangement ( 12 ) for projecting the deflected light beam (T) onto a scene that is to be scanned, characterized in that the light beam (T) is collimated in such a manner so that it penetrates through the lens arrangement ( 12 ) in a lens section that is dependent on the angular position (α) of the prism ( 10 ), in that the lens arrangement ( 12 ) comprises lens sections ( 120 , 121 , 122 , 123 ) with different focal lengths, and in that the focal lengths of the lens sections ( 120 , 121 , 122 , 123 ) are selected in such a manner so that the radiation source ( 11 ) respectively lies in the focal point of the lens section ( 120 ) that is penetrated by the light beam (T).