Optoelectronic system using spatiochromatic triangulation

Abstract

In accordance with the teachings of the present invention, an optoelectronic system (10) is provided for surface digitization of an object using spatiochromatic triangulation. The optoelectronic system (10) includes an illuminating subsystem (12) for illuminating a measuring space (30) that contains an object (16) to be measured, as well as a viewing subsystem (14) for collecting the light reflected by this object (16) and for generating a three-dimensional topography of the object (16) using in depth chromatic coding of the object. More specifically, relay optics (22) are used to image a polychromatic light source (20) onto a source slit (24) which in turn passes images from the slit image onto a dispersing element (26). The object to be measure is illuminated with a continuum of monochromatic images along a cutting, plane (x,z) within the measuring space (30). A color coded (x, λ) representation, generated by the intersection of the cutting plane (32) and the surface of the measured object (16), is imaged onto a viewing slit of an imaging spectrograph. A relay lens (50) is used for projecting this image onto the viewing slit (42). A grayscale imaging array (46) located in the image plane of the spectrograph (40) registers the color coded representation, and by using spectrophotometric analysis, an image processor (40) translates this representation into a plane section of the three-dimensional topography of the measured object (16).

Dependencies are inferred from the claim text.