A Method Used to Improve the Dynamic Range of Shack–Hartmann Wavefront Sensor in Presence of Large Aberration [PDF]
Sensors, 2022 With the successful application of the Shack–Hartmann wavefront sensor in measuring aberrations of the human eye, researchers found that, when the aberration is large, the local wavefront distortion is large, and it causes the spot corresponding to the ...
Wen Yang, Jianli Wang, Bin Wang
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Large-Dynamic-Range Ocular Aberration Measurement Based on Deep Learning with a Shack–Hartmann Wavefront Sensor [PDF]
SensorsThe Shack–Hartmann wavefront sensor (SHWFS) is widely utilized for ocular aberration measurement. However, large ocular aberrations caused by individual differences can easily make the spot move out of the range of the corresponding sub-aperture in SHWFS,
Haobo Zhang +5 more
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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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Testing and characterization of challenging optics and optical systems with Shack Hartmann wavefront sensors [PDF]
EPJ Web of Conferences, 2019 The Shack-Hartman wavefront sensor is a common metrology tool in the field of laser, adaptive optics and astronomy. However, this technique is still scarcely used in optics and optical system metrology.
Siv Julie +5 more
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Expanded Scene Image Preprocessing Method for the Shack–Hartmann Wavefront Sensor [PDF]
Applied Sciences, 2023 Due to the influence of atmospheric turbulence, the detector, and background noise, the subaperture image of an extended scene Shack–Hartmann wavefront sensor will have a low signal-to-noise ratio, which will introduce errors to the offset estimation and
Bo Chen +4 more
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Impact of CMOS Pixel and Electronic Circuitry in the Performance of a Hartmann-Shack Wavefront Sensor [PDF]
Sensors, 2018 This work presents a numerical simulation of a Hartmann-Shack wavefront sensor (WFS) that assesses the impact of integrated electronic circuitry on the sensor performance, by evaluating a full detection chain encompassing wavefront sampling ...
Úrsula Vasconcelos Abecassis +4 more
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Meta Shack–Hartmann wavefront sensor with large sampling density and large angular field of view: phase imaging of complex objects [PDF]
Light: Science & ApplicationsShack–Hartmann wavefront sensors measure the local slopes of an incoming wavefront based on the displacement of focal spots created by a lenslet array, serving as key components for adaptive optics for astronomical and biomedical imaging.
Gi-Hyun Go +5 more
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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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Large dynamic range Shack-Hartmann wavefront sensor based on adaptive spot matching [PDF]
Light: Advanced ManufacturingThe Shack-Hartmann wavefront sensor (SHWS) is widely used for high-speed, precise, and stable wavefront measurements. However, conventional SHWSs encounter a limitation in that the focused spot from each microlens is restricted to a single microlens ...
Jiamiao Yang +5 more
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Experimental Verification of Model-Based Wavefront Sensorless Adaptive Optics System for Large Aberrations [PDF]
MicromachinesTo address the limitations of conventional wavefront sensorless adaptive optics (AO) systems regarding iteration efficiency and convergence speed, this study conducts an experimental validation of a model-based wavefront sensorless AO approach.
Huizhen Yang +4 more
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