A laminating device laminates a functional foil onto a surface of an optical element. The laminating device includes a holding module, an optical element holder, and a thermal forming module. The holding module has a sleeve-shaped foil holder extending along a central longitudinal axis with an opening at an upper longitudinal end. The upper longitudinal end holds the functional foil and the optical element holder holds an optical element. The foil holder surrounds the optical element holder. The thermal forming module contains an air passage for providing an air flow with controlled temperature and pressure, which is arranged at a lower longitudinal end of the thermal forming module. The holding module and the thermal forming module are arranged along the central longitudinal axis such that the lower longitudinal end of the thermal forming module and the upper longitudinal end of the foil holder are facing each other.