Flexible Foil Mesh Generation for Spatial Focal-Body Modeling of a Spherical Mirror

We present a novel application of the Flexible Foil Mesh Generation (FFMG) method to model the $3D$ Focal Body generated by a spherical mirror collecting light from an infinitely distant source on its optical axis. The study addresses the challenge of accurately representing highly concave structures formed by the focusing effect. Through theoretical analysis and numerical simulations, we demonstrate the effectiveness of the FFMG method in capturing the intricate geometry of the Focal Body, with implications for computational geometry, $3D$ reconstruction, and optical system modeling.