Brief description of the ablation of a surface in three dimensions is to propose a device for laser ablation, and a device for implementing the process

摘要

The present invention relates to a process characterized in that it comprises - a step (e1) of calibration of a device according to which - a head galvanometric illuminates along two axes a plate of the calibration of the calibration, situated at a depth, in order to illuminate a plurality of predetermined points of the plate of the calibration, while a camera can be seen that said plate of the calibration, a command to establish a correspondence between, on the one hand, the lighting position of each of the points illuminated of the plate of the calibration to the depth and, on the other hand, the position shown by the camera of the points illuminated; the plate of the calibration is successively positioned at a plurality of depths for the calibration step, in order to allow a plurality of lighting by the head, the observation by the camera and to set up connections by the control, the control set up a connection between the correspondences - a step (e2) of determining the three-dimensional shape of the surface to ablate, on the basis of the calibration step (e1), by triangulation, and - a step (e3) of the removal of the surface in three dimensions, according to which the control of the galvanometric control head as a function of the particular shape of the surface, in order to focus and, according to the axes defining a plane, and according to a depth, the beam on the surface to ablate. The present invention also relates to a device for implementing a method described above.