Highly Stable Spatio-Temporal Prediction Network of Wavefront Sensor Slopes in Adaptive Optics [PDF]
Sensors, 2023 Adaptive Optics (AO) technology is an effective means to compensate for wavefront distortion, but its inherent delay error will cause the compensation wavefront on the deformable mirror (DM) to lag behind the changes in the distorted wavefront ...
Ning Wang +6 more
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Sub-Millisecond Phase Retrieval for Phase-Diversity Wavefront Sensor. [PDF]
Sensors (Basel), 2020 We propose a convolutional neural network (CNN) based method, namely phase diversity convolutional neural network (PD-CNN) for the speed acceleration of phase-diversity wavefront sensing.
Wu Y, Guo Y, Bao H, Rao C.
europepmc +2 more sources
Accounting for focal shift in the Shack-Hartmann wavefront sensor. [PDF]
Opt Lett, 2019 The Shack–Hartmann wavefront sensor samples a beam of light using an array of lenslets, each of which creates an image onto a pixelated sensor. These images translate from their nominal position by a distance proportional to the average wavefront slope ...
Akondi V, Dubra A.
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Centroid error due to non-uniform lenslet illumination in the Shack-Hartmann wavefront sensor. [PDF]
Opt Lett, 2019 Images formed by individual Shack-Hartmann wavefront sensor lenslets are displaced proportionally to the average wavefront slope over their aperture. This principle fails when the lenslet illumination is non-uniform.
Akondi V, Steven S, Dubra A.
europepmc +2 more sources
Advancing wavefront sensing: meta Shack-Hartmann sensor enhances phase imaging [PDF]
Light: Science & ApplicationsA meta-lens array-based Shack-Hartmann wavefront sensor has been developed to break the limits imposed by the size and curvature of traditional micro-lenses, which significantly improves both sampling density and angular resolution of phase measurement ...
Xiaoyuan Liu, Zihan Geng, Mu Ku Chen
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Experimental wavefront sensing techniques based on deep learning models using a Hartmann-Shack sensor for visual optics applications [PDF]
Scientific ReportsWavefront sensing is essential in visual optics for evaluating the optical quality in systems, such as the human visual system, and understanding its impact on visual performance. Although traditional methods like the Hartmann-Shack wavefront sensor (HSS)
Juan Sebastián Ramírez-Quintero +3 more
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Non-modulated pyramid wavefront sensor. Use in sensing and correcting atmospheric turbulence [PDF]
Astronomy & Astrophysics, 2023 Context. The diffusion of adaptive optics systems in astronomical instrumentation for large ground-based telescopes is rapidly increasing and the pyramid wavefront sensor is replacing the Shack-Hartmann as the standard solution for single conjugate ...
G. Agapito +4 more
semanticscholar +1 more source
The bright pyramid wavefront sensor [PDF]
Techniques and Instrumentation for Detection of Exoplanets X, 2021 submitted proceedings to SPIE SPIE Optical Engineering + Applications 2021, Techniques and Instrumentation for Detection of Exoplanets ...
Jean-François Sauvage +7 more
openaire +3 more sources
On-sky Reconstruction of Keck Primary Mirror Piston Offsets Using a Zernike Wavefront Sensor [PDF]
Astrophysical Journal, 2022 The next generation of large ground- and space-based optical telescopes will have segmented primary mirrors. Co-phasing the segments requires a sensitive wavefront sensor capable of measuring phase discontinuities.
M. V. van Kooten +5 more
semanticscholar +1 more source
Dual-angle open field wavefront sensor for simultaneous measurements of the central and peripheral human eye. [PDF]
Biomed Opt Express, 2020 Romashchenko D, Lundström L.
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