Fig. 6From: Phase space of partially coherent light with discontinuous surfacesFresnel lens with conical grooves (a) and linear saw-tooth grooves (b), both with a focal length of 10 mm. Figures with the same titles share the same color bars. The parameters for the incident light source are σ = 2 μm, δ = 0.3 μm and M = 40Back to article page