Method of minimizing the maximum thickness of a unifocal ophthalmic lens and gradient index unifocal ophthalmic lens obtained by application of this method

摘要

A unifocal ophthalmic lens has part-spherical concave and convex surfaces. Its refractive index varies radially from its optical axis to its periphery. The variation of the refractive index is governed by a law such that the absolute value of the optical power of the lens is significantly greater than its geometrical power when the optical power is computed using the refractive index of the lens on its optical axis.