Patent ID: 8125649

Claim:
Scanning sensor system for noncontact optical scanning of object surfaces, the system comprising, as mutually adapted system components, a sensor head ( 2 ) and an optics unit ( 3 ), wherein the optics unit ( 3 ) can be attached and positioned with high precision on the sensor head ( 2 ) by means of a fixing device ( 4 ), the fixing device ( 4 ) comprises a pressing-on device ( 30 ) which presses the optics unit ( 3 ) toward the sensor head ( 2 ), the fixing device ( 4 ) comprises three bearings ( 20 , 21 , 22 ), by which an optics unit ( 3 ) pressed against the sensor head ( 2 ) is borne and thereby positioned, each of the three bearings ( 20 , 21 , 22 ) comprises a pair of bearing parts ( 17 a , 17 b ; 18 a , 18 b ; 19 a , 19 b ) adapted to one another with respect to their shape and positioning, the bearing parts having bearing surfaces in which one of the bearing parts ( 17 a , 18 a , 19 a ) of each of said bearing part pairs is in contact with at least one bearing surface of the other bearing part ( 17 b , 18 b , 19 b ) of said bearing part pair, one bearing part ( 17 b , 18 b , 19 b ) of each bearing part pair is located at the optics unit ( 3 ) and the other bearing part ( 17 a , 18 a , 19 a ) of said bearing part pair is located at the sensor head ( 2 ), and the bearing part pairs are configured in such a manner that they effect different restrictions of lateral movements of one bearing part ( 17 a , 18 a , 19 a ) of the bearing part pair relative to the other bearing part ( 17 b , 18 b , 19 b ) of the bearing part pair in the lateral direction, relative to a plane running through the bearings ( 20 , 21 , 22 ), namely that: a first bearing part pair ( 17 a , 17 b ) allows no lateral movement, a second bearing part pair ( 18 a , 18 b ) allows only a linear lateral movement in one spatial direction, and a third bearing part pair ( 19 a , 19 b ) allows a two-dimensional lateral movement in two spatial directions.