Characterization of electrically tunable liquid lens and adaptive optics for aberration correction

摘要: Abstract One specific kind of electrically tunable lenses is utilizing curvature change via adjusting input currents which electromagnetically exerts pressure on liquid volume to achieve variable-focusing properties. Nevertheless, the nature and refractive index mismatch causes inherent spatial aberrations that severely degrade image quality. The novelty presented method lies in experimental study optical aberrations, such as root mean square (RMS), Strehl ratio Zernike coefficients induced from use adaptive optics compensate for wavefront errors. properties lens are quantitatively characterized by Shack – Hartmann measurements. Adaptive optics-based scheme demonstrated current range 78–95 mA, resulting a substantial reduction errors 0.55, 0.53 0.22, 0.2 μm, respectively, corresponding focal power tunability −2.52 0.2 diopters. It experimentally showed defocus (Z5) aberration most significant one since changes varies proportional with changing currents, can be significantly improved 0.328 μm 0.156 μm optics. Similar improvements found piston (Z1)/tip (Z2)/tilt (Z3) integration