IMPROVED MOLDING DEVICE FOR CASTING AN OPTICAL ARTICLE WITH WAFER ON TOP, CORRESPONDING METHOD AND OPTICLE ARTICLE

A molding device for casting an optical article with a thermoset resin, the optical article defining two opposed main surfaces, one of which being formed by an optical functional wafer, the molding device comprising:a. a molding element (2) forming a rear or a front part of a casting moldb. a gasket (3) intended to surround the molding elementc. an initially curved wafer (4) defining a predetermined curvature depending on one of the two main surfaces of the optical article to be moldedd. a closing element (6) defining in a closing position in which the peripheral part of the wafer on the gasket is pinched, a pouring space between the molding element, the gasket and the wafere. spacing means (9) interposed between the wafer and the molding element to define an internal volume between the wafer and the closing element, the spacing means, wafer and closing element being configured to form a set hermetic to the resin to be poured into the molding device the closing member occupies a closing position.