Double progressive lens and preparation method thereof

• Main Authors: YANG MINNAN, WU FUZHANG, LUO HONGMIN
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2021
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CONTACT LENSES; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention relates to a double progressive lens and a preparation method thereof, the double progressive lens comprises a substrate, the upper part of an eye is taken as the upper part, and the outer surface of the substrate is provided with a progressive high-reflection film layer located at the upper part and an outer anti-reflection film layer located at the lower part; and the lower edge of the progressive high-reflection film layer coincides with the upper edge of the outer anti-reflection film layer, the inner anti-reflection film layer is arranged on the inner surface of the substrate, the progressive high-reflection film layer comprises 11 film layers, and the outer anti-reflection film layer and the inner anti-reflection film layer both comprise 7 film layers. The progressive high-reflection film layer and the anti-reflection film layer are matched, most strong light and scattered light are reflected above the lens according to the reflection and anti-reflection principle of an optical film, inter