DIFFRACTIVE MULTI-FOCAL OCULAR LENS AND METHOD FOR MANUFACTURING DIFFRACTIVE MULTI-FOCAL OCULAR LENS

摘要

The present invention pertains to a diffractive multi-focal ophthalmic lens, and the purpose is to provide a novel structure and manufacturing method in which improvement in optical characteristics such as halo reduction is obtained. A diffractive multi-focal ophthalmic lens in which a plurality of focal points are set by a diffraction grating comprising a blaze shaped phase function in which a plurality of zone sequences are overlapped, wherein adopted is a structure expressed by a phase function in which an inclination of a blaze of a specific adjustment zone in a standard profile is reversed.