10.6084/m9.figshare.5833965.v1 Christoph Braig Christoph Braig Ivo Zizak Ivo Zizak psf-evolution.mp4 Optica Publishing Group 2018 Diffractive lenses Three-dimensional fabrication X-ray imaging X-rays, soft x-rays, extreme ultraviolet (EUV) Astronomical optics Space optics 2018-03-05 21:05:04 Media https://opticapublishing.figshare.com/articles/media/psf-evolution_mp4/5833965 The video shows the simulated point spread function (PSF) of a stepped achromatic X-ray lens, as it varies with the photon energy within one period of the spectral comb structure. The effect of focusing and defocusing, depending on the energy, is demonstrated. The parameters are chosen according to a typical design of these lenses and documented in the video.