摘要:
The invention concerns an optical lens comprising (i) a temporary coating at least partially covering a surface of the lens, said temporary coating comprising an outermost layer mechanically degradable through friction and/or contact; (ii) a removable film having opposite first side and second sides which adhere to said outermost layer through its first side, wherein—the first side of the film has a roughness Rq lower than 750 nm and the first side of the film has a surface energy lower than 38 mJ/m2.
摘要:
The present invention relates to an ophthalmic lens in which the front and rear surfaces each have different hydrophobic properties. Said lens includes a substrate having a hydrophobic main front surface, and a main rear surface, the outer surface of which has a receding water contact angle of no lower than 80°, the outer surface of said main front surface having a receding water contact angle lower than that of the rear main surface. The invention provides various means for preparing said lenses, which can be obtained in particular after depositing and then removing temporary layers with different thicknesses on the two surfaces of the lens.
摘要:
The invention relates to a method for cutting-out a multi-layer ophthalmic lens (100) following a desired contour (C3), including: a step of pre-blanking the ophthalmic lens (100) using a preliminary tool (210; 223), according to a preliminary contour (Cl,Cl'); a step of blanking said ophthalmic lens (100) using a blanking wheel (210), following a blanking contour (C2, C3); and a step of finishing the ophthalmic lens (100) using a finishing tool (212). According to the invention, the preliminary contour (Cl, Cl') is larger than the desired contour (C3), and the blanking wheel (210) used has a granulometry of between 0.1 and 0.5 mm and is controlled in relation to said ophthalmic lens (100) so as to apply a radial force of between 0.1 and 5 N to the ophthalmic lens (100) during said blanking step.