Method for the production of a security feature, security feature for a data medium, data medium, and lamination sheet

A method for producing a security feature for a data medium, comprising the steps of:

• providing a substrate of plastic material which is transparent or partially transparent in the visible spectral range;
• providing a molding means which has a molding structure and forms an image presentation of a representation which together with a light-diffractive or light-refractive structure generates an optically variable image;
• introducing the representation into one side of the substrate by impressing the molding structure;
• forming a light-diffractive or light-refractive structure on the opposite side of the substrate;
• and
• introducing a superimposed security element into the substrate with a laser by changing the substrate material locally in terms of color;
• wherein the introduction of the superimposed security element takes place through the light-diffractive or light-refractive structure;
• wherein the superimposed security element is optically variable when viewed through the light-diffractive or light-refracting structure.