Fig. 2From: Construct freeform surface directly in an initial layout of an off-axis reflective image system by seed curve extension and simulated annealing algorithmCalculate the sample points on the freeform surface (a) set the first point (b) Calculate the sample points on the seed curve (c) the sample points on the curve adjacent to seed curve(d) Calculate all the sample points on the freeform surfaceBack to article page