Spectacle lens and method for generating design data for a spectacle lens

A data processing system comprising a processor configured to generate design data of a single vision spectacle lens suitable for the purpose of a use of the design data for manufacturing the spectacle lens having a prescribed power and an edge contour fitted to a predefined spectacle frame, wherein generating the design data comprises:

• providing prescription information regarding the prescribed power for the spectacle lens and geometrical information regarding the predefined spectacle frame:
• optimizing a geometrical profile of at least one surface of the spectacle lens;
• and
• optimizing a spatial variation of a refractive index of the spectacle lens,
• wherein optimizing the geometrical profile of at least one surface of the spectacle lens and optimizing the spatial variation of the refractive index of the spectacle lens are carried out such that an optical power of the spectacle lens corresponds to the prescribed power and an edge thickness of the edge contour of the spectacle lens fitted to the geometrical information regarding the predefined spectacle frame varies by 0.5 mm or less over the edge contour, and
• wherein optimizing the geometrical profile of the at least one surface of the spectacle lens changes a curvature of the at least one surface.

A spectacle lens having a prescribed power and an edge contour fitted to a predefined spectacle frame, wherein the spectacle lens is a single vision lens and a geometrical profile of at least one surface of the spectacle lens resulting in a power of the spectacle lens essentially corresponding to the prescribed power and an edge thickness of an edge contour of the spectacle lens fitted to the geometrical information regarding the predefined spectacle frame varies by 0.5 mm or less over the edge contour,

• wherein the spectacle lens has a locally varying refractive index;
• and the locally varying refractive index is provided by two or more different materials having different indices of refraction applied in different layers having a spatially varying thickness using an additive manufacturing technique, the two or more different materials containing:
• a low refractive material having a refractive index of 1.5 or less containing at least one material selected from the group:
• fluorine-containing monomers, nanoparticles based on MgF2, aliphatic monomers, cycloaliphatic monomers, and nanoparticles based on SiO2;
• and
• a high refractive material having a refractive index higher than 1.5 containing at least one material selected from the group of:
• aromatic compounds, halogenated compounds, sulfur-containing compounds, metal containing compounds, nanoparticles based on polymers, nanoparticles based on metals, nanoparticles based on metal oxides, nanoparticles based on chalcogenides, and nanoparticles based on metal salts.