Is it possible to transform a light spherical wave front or another wave front with a known behaviour into a planar one?
Say I have the position of a point light source, and I can approximate it by an isotropic spherical model (just as an example), what kind of operations do I need to do to make it a planar wave. More specifically, if I take a plane perpendicular to the light axis from an unknown distance to the light, I want to simulate a constant lighting on that plane.
I know a spherical wave can be transformed to a planar (or almost planar) using different optics, however, I am not sure how/if this can be done analitically. Is it at all possible?