PINN inspired Freeform Design: Using Fraunhofer Diffraction to find Freeforms described by B-spline Surfaces

This project aims to recreate intensity patterns using Fraunhofer diffraction as a means of simulation. These intensity patterns are created by phase shifting specific parts of an incoming field of light. These phase shifts are determined by a B-spline surface, which is in turn controlled by so-called control points. Only a handful of control...

Focal field shaping by means of pupil engineering using the ENZ theory

With a semi-analytical result from the Extended Nijboer-Zernike theory (which relates the Zernike modes that form a pupil function directly to basic functions in the focal region), an algorithm is developed which finds pupil functions which give rise to an extended depth of focus. An outcome of this algorithm is used to create a phase mask,...