OPHTHALMIC LENS AND METHOD FOR DESIGNING OPHTHALMIC LENS农业专利-农业专业知识服务系统

摘要：: It is provided with an ophthalmic lens having a cross-sectional shape in an arbitrary meridian direction on a lens surface of the ophthalmic lens. The cross-sectional shape is expressed by the following formula (1), $Z = \frac{{cr}^{2}}{1 + {[1 - c^{2} r^{2} (k + 1)]}^{1 / 2}} + A (θ) r^{2} + B (θ) r^{4}$ (1) wherein c is a paraxial curvature of the ophthalmic lens, r is a distance from a lens center of the ophthalmic lens, k is a conic constant of a surface which is in rotation symmetry with respect to an optical axis of the lens in the ophthalmic lens, c, r and k are used in common in the meridian direction on the lens surface, and A(θ) and B(θ) are parameters expressed by functions depending on an angle in the meridian direction.