Fig. 7: Demonstration of generation of 2D maps of mirror surface.
From: Nano-precision metrology of X-ray mirrors with laser speckle angular measurement
a Schematic representation of the generation of 2D maps of the modified elliptical mirror by choosing multiple subset windows along the camera width from a stack of speckle images. The measured 2D map for tangential (b) reciprocal local radius of curvature (R−1), (c) slope (S), and (d) parabolic modification (∆S)
