Patent ID: 6327041
Filing Date: 2001-12-04
Classification: G01B,G01J

Abstract:
A device for opto-electrically acquiring the shape of the surface of an object comprising:means for illuminating the surface by a plurality of light beams having different wavelengths, said light beams converging on an illumination axis at different points distributed along said illumination axis, respectively, whereby said light beams are reflected and backscattered by the surface;(b) means arranged on said illumination axis for blocking central illuminating rays from passing on said illumination axis toward said surface;(c) analyzing means for determining the spectral composition of captured light;(d) optical means for capturing part of the light reflected and backscattered by the surface and for transmitting said captured light to said analyzing means; and(e) said analyzing means further including means for calculating from said spectral composition the distances between a reference plane and the points of the surface which reflect and backscatter light captured by said optical means.