Patent ID: 9492978
Filing Date: 2016-11-15
CPC Classification: B29D,G02C,Y10T

Claim Text:
1. A method for fabricating an ophthalmic lens, comprising: providing a lens blank made of a transparent optical quality material, the lens blank having a structured surface and a non-structured surface, the structured surface having a base curvature, the structured surface being defined by a plurality of peaks and valleys; applying a resin coating to the structured surface of the lens blank so that the resin coating covers the structured surface and has a smooth free surface with a curvature corresponding to the base curvature of the structured surface; curing the resin coating in situ on the lens blank in a mold part with a UV lamp, wherein a material of the resin coating has a refractive index is between about 1.38 and about 1.55; providing a rigid film or film stack; and laminating or bonding the film or film stack to the resin coating, wherein, a) the UV lamp is disposed on the side of the lens blank remote from the mold part, and not on a mold side, and is configured to emit incident UV radiation which is directed at the non-structured surface of the lens blank, and b) successively, the rays of the incident UV radiation first pass through the non-structured surface of the Fresnel lens blank, which is opposite the structured surface of the Fresnel lens blank, then the rays of reach the valleys of the structured surface of the Fresnel lens blank before reaching the resin coating, then the rays reach and cure the resin coating, and then the rays pass through the transparent mold part at the opposite of the non-structured surface.