User Guide# The User Guide provides documentation for all of Lentil’s features and capabilities. Getting started Installation Importing lentil and subpackages Resources Fundamentals Introduction Coordinate system Apertures and masks Planes Representing wavefront error Wavefront and Field Numerical diffraction propagation Diffraction propagation with large tilts Segmented optical systems Imaging artifacts Image sensors Computational radiometry Advanced usage Extending Lentil Optimizing Performance Using Lentil with MATLAB