Laboratory mean encircled energy measurements of the four DM speckles at different separations: 10 λ/D (left panel), 15 λ/D (central panel), and 20 λ/D (right panel). In all panels, the dashed black line (Reference) shows measurements with only bump mask and Lyot stop in the beam; the dark purple line (fPIAA) shows measurements with bump mask, Lyot stop, and the forward PIAA lenses set in the beam; and the light pink line (fPIAA+iPIAA) shows measurements with bump mask, Lyot stop, and both forward and inverse PIAA lenses sets in the beam. The distortions caused by the forward PIAA lenses get worse for larger separations, as we deviate more from the optimal on-axis position. The inverse PIAA lenses restore the original encircled energy within a small margin between ∼97% to ∼92% depending on the DM speckle separation.