Patent ID: 7357503

Claim:
A process for the manufacture of an ophthalmic lens comprising: a) providing a substrate made of organic glass having front and rear main faces, b) optionally cleaning and drying the front face of the substrate, which is to receive an optically transparent composite film comprising a latex layer and a polarizing dye material, c) applying on the front face of the substrate a latex composition and drying or partially precuring said composition to form a dry latex layer having an outer face, d) preparing the face of the latex layer opposite to the substrate by forming parallel microgrooves on the said face of the latex layer, e) depositing a polarizing dye material on the front face of the said latex layer having the microgrooves, the said microgrooves being at least partially filled by the polarizing dye material, and f) treating the resulting polarizing dye material for fixing the polarizing dye material, wherein the parallel microgrooves are formed through a process comprising a step for transferring a microstructure corresponding to the microgrooves from a mould, an internal face of which supports the said microstructure.