Patent ID: 9176330
Filing Date: 2015-11-03
Classification: G02C

Abstract:
1. A method for designing and manufacturing an optical element having at least one diffraction grating, the method comprising: designing, by a computer, at least one refractive surface contributing to refractive light deflection and/or the at least one diffraction grating of the optical element to minimize the color fringe and at least one second-order aberration of the optical element, by minimizing or maximizing a target function, which depends on the at least one second-order aberration and on the longitudinal and/or lateral chromatic aberration(s) of the optical element, wherein the target function is a target function F wherein F wherein the target function F where Z Z S S g g manufacturing the optical element on the basis of the designed at least one refractive surface and/or the at least one diffraction grating.