Personalization module for security documents

A personalization module, for personalization of a security document, said document comprising a marking area for marking a two-image element MLI or CLI through an array of lenticular lenses having a main direction of elongation, said personalization module comprising:

• a laser marking module, configured to mark within a marking zone, and comprising a laser head configured to emit a laser beam, and a laser scanner equipped with movable mirrors to deflect said laser beam towards said document,
• wherein the personalization module further comprises:
• an optical prism, configured to refract the laser beam from the laser scanner mirrors to the lenticular lenses, one side of the prism enabling marking a first image element of the MLI or the CLI, the other side of the prism enabling marking a second image element of the MLI or the CLI.