Device and method for geometrically measuring an object

A computer program for the geometric measurement of an object by means of an apparatus comprising:

• a carrier for the object, at least one reference object fixable in relation to the carrier, and a holder movable in relation to the at least one reference object in at least one direction, with a reference body and a distance measuring device being arranged on said holder, said distance measuring device being configured to measure a distance between the object and the reference body, wherein a first reference sensor and a second reference sensor are arranged spaced apart from one another, facing the at least one reference object on the holder or on the reference body, said first reference sensor and said second reference sensor being embodied to measure a first distance and a second distance, respectively, to the at least one reference object,
• said computer program comprising:
• program means for capturing a surface contour of an object, mounted on the carrier, in a scanning manner by means of the distance measuring device,
• program means for measuring a plurality of distances between the measuring points of the object and reference points of the reference body and for generating a surface image of the object,
• program means for ascertaining a position and alignment of the holder, or of the reference body thereof, relative to the at least one reference object by means of the first reference sensor and the second reference sensor, and
• program means for correcting the surface image on the basis of the position and alignment of the holder, or of the reference body thereof, relative to the at least one reference object.

An apparatus for the geometric measurement of an object, comprising:

• a carrier for the object,
• at least one reference object fixable in relation to the carrier, and
• a holder movable in relation to the at least one reference object in at least one direction, with a reference body and a distance measuring device being arranged on said holder, said distance measuring device being configured to measure a distance between the object and the reference body,
• wherein a first reference sensor and a second reference sensor are arranged spaced apart from one another, facing the at least one reference object on the holder or on the reference body, said first reference sensor and said second reference sensor being embodied to measure a first distance and a second distance, respectively, to the at least one reference object,
• wherein the first reference sensor is embodied to measure the first distance to a first point of a reference surface of the at least one reference object facing the holder or the reference body,
• wherein the second reference sensor is embodied to measure the second distance to a second point of the reference surface of the at least one reference object facing the holder or the reference body, and
• wherein a distance (d) between the first point and the second point of the reference surface correlates with a distance (D) between the first reference sensor and the second reference sensor.