Apparatus for digitizing the contour of a three-dimensional...

Details Apparatus for digitizing the contour of a three-dimensional... Apparatus for digitizing the contour of a three-dimensional...

G - Physics

05

B

354/22

G05B 19/42 (2006.01) A61C 13/00 (2006.01) A61C 9/00 (2006.01)

Patent

CA 2005439

APPARATUS FOR DIGITIZING THE CONTOUR OF A THREE-DIMENSIONAL SURFACE, PARTICULARLY USEFUL FOR PREPARING A DENTAL CROWN ABSTRACT OF THE DISCLOSURE Apparatus for digitizing the contour of a three-dimensional surface of an object includes a handle, a probe carried by the handle and movable along three independent axes to contact sample points on the three-dimensional surface, and a positional sensor for sensing the position of the handle along the three axes and for outputting positional values. The probe includes an arm deflectable during the movement of the probe, which deflections are sensed by a sensor. digital processor processes the positional values only when one of the deflection sensors senses a deflection in its respective arm above a predetermined threshold value, and modifies the positional values by the deflection values.

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