Abstract: Finished ophthalmic lens and corresponding methods. Finished ophthalmic lens having one concave face, one convex face; an outer perimeter with a thickness within a pre-established range; a central useful area that fulfills a pre-established ophthalmic prescription, which defines a machined surface, and which has a useful perimeter that coincides with a perimeter of a pre-established frame; and an outer transition area that joins the useful perimeter of the central useful area to the outer perimeter. A transition area includes a transition surface that extends from the machined surface and as far as the outer perimeter, is continuous and a derivative thereof is continuous on all points, including a joining line between the transition surface and the machined surface.

Abstract: A method for designing and manufacturing a monofocal ophthalmic lens and corresponding lens. A surface of the monofocal ophthalmic lens is defined by: f(x,y)=a1+a2?{square root over (1?a3x2?a4y2)}+a5exp{a6x4+a7y4+a8x2y2} wherein x and y are perpendicular optical axes of the lens in a plane, wherein a1-a8 are coefficients, and wherein a5 is other than 0 and at least one of a6, a7 and a8 is other than 0, including a hyperbolic component and an exponential component. The coefficients can be calculated by an iterative calculation and the merit function as follows: fm = [ ? i ? ? i ? m i 2 ? ( ? ) ] 1 / 2 where mi is a value of an optical property at a specific viewing angle ? with respect to an optical axis of the lens, and ?i is a weighting value.

Abstract: Method for designing a progressive ophthalmic lens with a top area between a vision area and a top edge of the lens, and a bottom area between a near vision area and a bottom edge of the lens. Selecting a predesigned lens, lateral aberrations which are redistributed around an outer area, defined according to a frame chosen by the lens user, so that at least on one of intersections between top, bottom and outer areas, the aberrations adopt values higher than those in the predesigned lens.

Abstract: Procedure for designing a progressive ophthalmic lens and corresponding lens. Procedure for designing a progressive ophthalmic lens, comprising a top area (7) between the far vision area (1) and the top edge of the lens and a bottom area (9) between the near vision area (3) and the bottom edge of the lens, which comprises an optimization stage wherein starting with a predesigned lens the lateral aberrations of the lens are redistributed around an outer area (15), defined according to a frame chosen by the future lens user, so that at least on one of the intersections between top (7) and bottom (9) areas and outer area (15), the aberrations adopt values higher than those they had in the predesigned lens.

Abstract: Finished ophthalmic lens and corresponding methods. Finished ophthalmic lens having one concave face, one convex face; an outer perimeter with a thickness within a pre-established range; a central useful area that fulfils a pre-established ophthalmic prescription, which defines a machined surface, and which has a useful perimeter that coincides with a perimeter of a pre-established frame; and an outer transition area that joins the useful perimeter of the central useful area to the outer perimeter. A transition area includes a transition surface that extends from the machined surface and as far as the outer perimeter, is continuous and a derivative thereof is continuous on all points, including joining line between the transition surface and the machined surface.