Three-dimensional level curves scanning based on intersection between laser lines

A dimensional measurement system also doing a tracking of objects movements is presented here. Especially, the method presented here permits to directly get the level curves of an object. It's an extension of the measurement methods by collimation, coupled with the use of a structured lighting with signature, formed of several luminous plans competing in a unique line. This line defines a set of points of the space at a fixed distance Z 0 of the measure head. The place of the points of the object where the lighting is reduced to a unique line is the searched level curve. The introduction of an asymmetry in the structure of the lighting permits to know the way as well as an approximate value of the value of the gap to the level curve of the position of the point of the illuminated object. The realized experiences permit to place the performances of such a system, and give the field of future applications.