Device for determining the 3D coordinates of an object, in particular of a tooth
A scanner is used for scanning an object, in particular one or more teeth ( 13, 14, 15 ) or a dental cast. An improved scanner comprises a carrier ( 2 ) on which a plurality of projectors ( 4 ) for projecting a pattern onto the object and a plurality of cameras ( 5 ) for recording the object are provided one beside the other in an array.
1. A scanner for scanning one or more teeth ( 13 , 14 , 15 ) in a mouth of a patient, comprising:
a handle part ( 3 ); and
a carrier ( 2 ) attached to the end of the handle part, the carrier including:
a plurality of projectors ( 4 ) for projecting a pattern onto the one or more teeth, each projector including:
a light source ( 6 );
a mask ( 7 ); and
a projector optics ( 8 ), and
a plurality of cameras ( 5 ) for recording the one or more teeth are provided in an array, each camera including:
an image sensor ( 9 ); and
a camera optics ( 10 ),
wherein all of the projector optics ( 8 ) and all of the camera optics ( 10 ) are combined to and positioned on one system optics ( 11 ), the system optics ( 11 ) being formed of one piece; and
wherein the projector optics ( 8 ) do not overlap with each other on the system optics ( 11 ), and the camera optics ( 10 ) do not overlap with each other on the system optics ( 11 ).
2. The scanner according to claim 1 , wherein the projectors ( 4 ) and cameras ( 5 ) are provided on the carrier ( 2 ) in a two-dimensional arrangement.
3. The scanner according to claim 2 , wherein the projectors ( 4 ) and the cameras ( 5 ) are alternately arranged on the carrier ( 2 ).
4. The scanner according to claim 3 , wherein the projectors ( 4 ) each comprise a light source ( 6 ), a mask ( 7 ) and a projector optics ( 8 ).
5. The scanner according to claim 4 , wherein the mask ( 7 ) and the projector optics ( 8 ) form a composite unit.
6. The scanner according to claim 2 , wherein the mask ( 7 ) and the projector optics ( 8 ) form a composite unit.
7. The scanner according to claim 1 , wherein the projectors ( 4 ) and the cameras ( 5 ) are alternately arranged on the carrier ( 2 ).
8. The scanner according to claim 7 , wherein the mask ( 7 ) and the projector optics ( 8 ) form a composite unit.
9. The scanner according to claim 7 , wherein the projectors each comprise a pattern projector and a projector optics.
10. The scanner according to claim 1 , wherein the mask ( 7 ) and the projector optics ( 8 ) form a composite unit.
11. The scanner according to claim 1 , wherein the projectors each comprise a pattern projector and a projector optics.
12. The scanner according to claim 1 , wherein the carrier ( 2 ′) has angled regions ( 18 ).
13. The scanner according to claim 1 , wherein the carrier ( 2 , 2 ′) has the shape of a dental arc.
14. A device for determining the 3D coordinates of one or more teeth ( 13 , 14 , 15 ) in a mouth of a patient, comprising:
a scanner ( 1 ) for scanning an object, the scanner including:
a handle part ( 3 ); and
a carrier ( 2 ) attached to the end of the handle part, the carrier including:
a plurality of projectors ( 4 ) for projecting a pattern onto the one or more teeth, each projector including:
a light source ( 6 );
a mask ( 7 ); and
a projector optics ( 8 ), and
a plurality of cameras ( 5 ) for recording the one or more teeth are provided in an array, each camera including:
an image sensor ( 9 ); and
a camera optics ( 10 ); and
a computer to determine the 3D coordinates of the object from the images recorded by the scanner,
wherein all of the projector optics ( 8 ) and all of the camera optics ( 10 ) are combined to and positioned on one system optics ( 11 ), the system optics ( 11 ) being formed of one piece; and
wherein the projector optics ( 8 ) do not overlap with each other on the system optics ( 11 ), and the camera optics ( 10 ) do not overlap with each other on the system optics ( 11 ).
15. The device according to claim 14 , comprising a tracking system for determining the location and orientation of the scanner ( 1 ).