Surface reconstruction from a measured pointset of a precise aspheric lens using anisotropic scaling SLIM method

Abstract

We developed a precise ray-tracing simulation method from a pointset of aspheric lens surfaces measured by a 3D profilometer. This technique evaluates optical functionality of actual lenses considering form errors in the fabrication process. An anisotropic scaling sparse low-degree implicit (SLIM) technique is proposed for surface mesh reconstruction from measured points. Nagata patch is adopted for representing lens geometry including surface profile errors. In this study, the accuracy of fabricated lens surfaces generated by anisotropic scaling SLIM was assessed.