Aspheric optics form representation considering fabrication profile errors using Nagata-patch

Abstract

We introduced a form representation method of aspheric lens surface considering its form errors on the fabrication process for a machining tool path generation compensating form errors and optical simulation. The method uses a local interpolation technique by parametric quadratic patches with normal vectors proposed by Nagata, in order to obtain lens models with nanometer precision without increasing the number of patches. The aspheric lens shape including a spatial mid-frequency form error has been expressed by this method.