MULTILAYER BODY OPTICAL ANTI-COUNTERFEITING ELEMENT AND FABRICATION METHOD THEREFOR

摘要

Provided are an optical anti-counterfeiting element and a fabrication method therefor. The optical anti-counterfeiting element comprising: an undulating structure layer (2), which comprises: a first region (A) having a first microstructure and a second region (B) having a second microstructure, the specific volume of the second microstructure being greater than the specific volume of the first microstructure; and a first plating layer (31), a dielectric layer (32), a second plating layer (33) and a protective layer (4) which are sequentially stacked on one side of the undulating structure layer (2), the first plating layer (31) and the dielectric layer (32) being located in the first region (A) and the second region (B), while the second plating layer (33) and the protective layer (4) are located in the first region (A) but not in the second region (B). The first plating layer (31), the dielectric layer (32) and the second plating layer (33) constitute a functional plating layer group (3), and the functional plating layer group (3) and the first microstructure have combined optical features in the first region (A), and the first plating layer (31) and the second microstructure have combined optical features in the second region (B).