Personalised image formed from a metal layer and a lenticular array

A secure document comprising:

• a metal layer having an arrangement of diffractive nanostructures, the diffractive nanostructures being arranged periodically in the metal layer to form a diffractive holographic structure;
• a lenticular array having converging lenses positioned facing the metal layer;
• and
• a support layer on which the metal layer is arranged such that said metal layer is interposed between the lenticular array and the support layer,
• wherein the metal layer includes perforations formed by focusing laser radiation through the lenticular array onto the metal layer, the perforations including at least one group of perforations produced by focusing the laser radiation at a respective angle of incidence to reveal a corresponding personalized image when the secure document is observed at said angle of incidence, and
• wherein the metal layer includes a holographic structure forming an arrangement of pixels each including a plurality of sub-pixels of different colors, the perforations locally revealing, through the holographic structure, color or grayscale shades caused by underlying regions of the support layer that are located facing the perforations, the underlying regions modifying a colorimetric contribution of the sub-pixels.