Patent ID: 6763319
Filing Date: 2004-07-13
Classification: G01B

Abstract:
A profilometer for measuring the surface profile of an object of measurement by means of causing an extremity of a probe to follow a measurement surface of the object, comprising:a stylus having a curvature radius of 1 mm or less provided at the extremity of the probe; curvature correction means for correcting the measurement data pertaining to the object in connection with a positional error stemming from the curvature radius of the probe; stylus profile correction means which corrects an error in the profile of the stylus through use of profile error data pertaining to the stylus determined through measurement of an article of reference shape which is to act as a reference for calibration; and coordinate conversion means which three-dimensionally rotates and translates said measurement data corrected by said curvature correction means and stylus profile correction means.