Feedforward operation of a lens setup for large defocus and astigmatism correction
H.R.G.W. Verstraete (TU Delft - Team Raf Van de Plas)
M. Almasian (Universiteit van Amsterdam)
Paolo Pozzi (TU Delft - Team Raf Van de Plas)
R Bilderbeek (Student TU Delft)
J. Kalkman (TU Delft - ImPhys/Quantitative Imaging)
DJ Faber (Universiteit van Amsterdam)
M. Verhaegen (TU Delft - Team Raf Van de Plas)
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Abstract
In this manuscript, we present a lens setup for large defocus and astigmatism correction. A deformable defocus lens and two rotational cylindrical lenses are used to control the defocus and astigmatism. The setup is calibrated using a simple model that allows the calculation of the lens inputs so that a desired defocus and astigmatism are actuated on the eye. The setup is tested by determining the feedforward prediction error, imaging a resolution target, and removing introduced aberrations.