| 摘要 |
The invention concerns a method for marking a surface (S) by laser treatment, consisting of etching a plurality of patterns (M(0), M(1)) onto the surface by means of a laser source (2), said patterns being distributed across the surface according to a predefined tessellation of adjacent patterns, which involves: —etching each pattern from a corresponding virtual image generated in an image plane (20) of the laser source and physically reproduced by laser etching on the surface, in which each virtual image defines a frame physically reproduced on an area of the surface such that the corresponding etched pattern has an etched frame covering said area, the etched frames of adjacent patterns covering adjacent areas; and —the laser source is controlled in position between each etching of a pattern by means of a three-dimensional surface mapping system (3) coupled to the laser source; the method being remarkable in that it involves resetting the laser source, before etching each pattern, by matching up hook elements and target elements between adjacent patterns. The present invention is applicable in the field of etching items made from a material suitable for laser marking. |
