SPECTACLE LENS WITH ASYMMETRIC DIFFRACTION GRATING FOR COLOUR FRINGE CORRECTION

摘要

The invention relates to a computer-implemented method for determining a diffraction grating for colour fringe compensation of a refractive optical element, which method comprises recording data of the refractive optical element, and calculating the diffraction grating on the basis of the recorded data of the refractive optical element, in such a way that the grating lines of the diffraction grating follow the lines of constant thickness of the refractive optical element or the lines of the constant amount of the prism of the refractive optical element or are perpendicular to the local base setting of the prism of the refractive optical element. The invention further relates to corresponding methods and devices for producing an optical element with at least one diffraction grating that has been determined by this method.