Hi! My understanding is that a parabola concentrate all the rays on focus point if the rays are parallel to axis(?). I tried to reverse engineer and find the axis from the geometry and use it to create the vectors. It give a better result but it’s not perfect. Have you tried to test it with an standard parabola shape?
im doing something similar…i want to see how a ray redirects in a prism or a lens…i cant do it with forward raytracing component in ladybug because it doesn’t take into account the materials…do you have any idea?
also i cant open the pictures an files that you shared here