| 摘要 |
A method of creating authentication 4 on a work of art 3 made of polymer or metal material and having a patterned design, by creating laser texturing on the patterned design having one or more of the following features: (i) an angular ablation (5, fig. 3), at a certain designated angle, (ii) a plurality of ablations of different depths or heights (6, fig. 4), such that light would be reflected at different angles from their surface to the human eye, (iii) micron- and/or nano-level size engravings (7, fig. 5), and (iv) grooves of differentiated width size (8, fig. 5), at a designated area of the material surface. The three-dimensional image created, such as a logo, is visible only if the artwork is viewed from a certain angle or under certain lighting conditions or using a magnifying lens, thus allowing to distinguish genuine works from fake copies and assisting in curbing counterfeiting of art products. |
