For example, you can load the Spherical Lens 3D part into a model and then specify the radii of curvature of each lens surface, along with the lens thickness and diameter.
It is possible to compute ray trajectories in an imported mesh. The mesh can be imported from a COMSOL Multiphysics file (.mphbin for a binary file format or
.mphtxt for a text file format) or from a NASTRAN file (
.nas,
.bdf,
.nastran, or
.dat).
If the mesh is imported from a NASTRAN file, the ray-boundary interactions may be modeled using either a linear or higher geometry shape order. If Export as linear elements is selected when generating the NASTRAN file, or if
Import as linear elements is selected when importing the file, then linear geometry shape order will be used.