DIFFRACTIVIE OPTIC

摘要

A method for designing a diffractive optic includes identifying an initial performance metric for the diffractive optic (110), the diffractive optic including a substrate. A test cell is selected from an array of cells on the substrate (120). A height of the test cell is changed by a predetermined height unit (130). Images are computed at a plurality of discrete wavelengths (140) or using a continuous spectrum using diffraction-based propagation through at least a portion of the array of cells. A wavelength metric is determined for each of the images (150). The wavelength metrics for each of the images is consolidated into a perturbed performance metric (160). The perturbed performance metric is compared to the initial performance metric (170) and the method identifies (180) whether the perturbed performance metric is an improvement over the initial performance metric.