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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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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Polarized Shack-Hartmann wavefront sensor
Frontiers in Physics, 2023 Shack-Hartmann wavefront sensor (SHWFS) has been widely used in adaptive optics (AO) systems to detect phase distortion characteristics. In laser communication, target detection, vision optics and other application fields, the performance of SHWFS is ...
Yanrong Yang +8 more
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Extraction and Verification of Seismic Vibration Metrics via Laser Remote Sensing Utilizing Wavefront Sensors [PDF]
SensorsSeismic wave analysis is crucial for identifying subsurface formations and geological hazards. In this study, a seismic wave laser remote sensing system based on a Shack–Hartmann wavefront sensor was established by exploiting its high spatial resolution,
Donghua Zhou +6 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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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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An Optical Wavefront Sensor Based on a Double Layer Microlens Array
Sensors, 2011 In order to determine light aberrations, Shack-Hartmann optical wavefront sensors make use of microlens arrays (MLA) to divide the incident light into small parts and focus them onto image planes.
Hsiang-Chun Wei +3 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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Wavefront aberrations in aging measured with Hartmann-Shack at 3- and 5-mm pupil sizes. [PDF]
Optom Vis SciSIGNIFICANCE Visual acuity (VA) depends on many factors. When the goal is to assess retinal health rather than performance, then using a 3‐mm pupil reduces unwanted wavefront aberrations. The axis of astigmatism can still potentially change with age.
Clark CA, Clark CA, Parimi V, Elsner AE.
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Shack–Hartmann Wavefront Sensing Based on Four-Quadrant Binary Phase Modulation
Photonics, 2022 Aiming at the problem that it is difficult for the conventional Shack–Hartmann wavefront sensor to achieve high-precision wavefront reconstruction with low spatial sampling, a kind of Shack–Hartmann wavefront sensing technology based on four-quadrant ...
Mengmeng Zhao +7 more
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