Patent ID: 7111937

Claim:
A method for forming an astigmatic atoric lens with a homogeneous optical material, comprising: producing at least one optical surface of said lens with the shape of an atoric surface, said atoric surface being a swept surface, generated by sweeping a plane symmetrical section curve along a plane symmetrical trajectory curve, so that at any point P of said trajectory curve: a) the vertex of the section curve lies at P; b) the inward unit normal vector at the vertex of the section curve coincides with the inward unit normal vector at the point P of the trajectory curve; and c) the plane in which lies the section curve is perpendicular to the plane in which lies the trajectory curve, wherein the trajectory curve of said at least one atoric surface of the lens is the equatorial curve meridian, and the section curve of said atoric surface of the lens is the transverse curve meridian.