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Simultaneous quantification of longitudinal and transverse ocular chromatic aberrations with Hartmann–Shack wavefront sensor [PDF]
Journal of Innovative Optical Health Sciences, 2018 A simple method to objectively and simultaneously measure eye’s longitudinal and transverse chromatic aberrations was proposed. A dual-wavelength wavefront measurement system using two Hartmann–Shack wavefront sensors was developed. The wavefronts of the
Yangchun Deng +3 more
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The range of local wavefront curvatures measurable with Shack‐Hartmann wavefront sensors [PDF]
Clinical and Experimental Optometry, 2009 Shack-Hartmann wavefront sensor systems are studied to assess the range of local wavefront curvatures that may be measured for a given choice of lenslet size and focal length and illumination beam characteristics, with special emphasis on systems design for use in wavefront eye refractors.
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Sensors, 2020 A speckle-based method for the X-ray crystal diffraction wavefront measurement is implemented, and the slope errors of channel-cut crystals with different surface characteristics are measured.
Lian Xue +5 more
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Adaptive wavefront shaping for flow-field measurements
SPIE Proceedings, 2016 In this contribution we use wavefront shaping approaches for image correlation based flow-field measurements for the first time. Aberrations introduced by a single phase boundary in the detection beam path were explored. Variations of the optical path-length result in strong errors in position allocation and thus to an enhancement of the measurement ...
Koukourakis, N. +3 more
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Measurement of XUV sources' wavefronts
Laser and Particle Beams, 2001 New fields of X-ray source applications (X-ray laser and high order harmonic generation) could appear if an intensity higher than 1012 Wcm−2 is reached. Following this goal, we have started a complete investigation of the X-ray beam wavefront both numerically and experimentally.
S. LE PAPE +6 more
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Deep Tissue Wavefront Estimation for Sensorless Aberration Correction
MATEC Web of Conferences, 2015 The multiple light scattering in biological tissues limits the measurement depth for traditional wavefront sensor. The attenuated ballistic light and the background noise caused by the diffuse light give low signal to noise ratio for wavefront ...
Ibrahimovic Emina +4 more
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Interferometric Wavefront Sensing System Based on Deep Learning
Applied Sciences, 2020 At present, most wavefront sensing methods analyze the wavefront aberration from light intensity images taken in dark environments. However, in general conditions, these methods are limited due to the interference of various external light sources.
Yuhao Niu +4 more
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Surface Measurement Using Compressed Wavefront Sensing
Photonic Sensors, 2018 Compressed sensing leverages the sparsity of signals to reduce the amount of measurements required for its reconstruction. The Shack-Hartmann wavefront sensor meanwhile is a flexible sensor where its sensitivity and dynamic range can be adjusted based on
Eddy Mun Tik Chow +3 more
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International Journal of Antennas and Propagation, 2022 The measurement of radiated emission (RE) in an anechoic chamber becomes very challenging at high frequencies, up to 60 GHz, because the scanning plane of the receiver is in measurement standard deviation from the actual wavefront.
Feng Shi +4 more
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Research on Optical Metrology for Complex Optical Surfaces with Focal Plane Wavefront Sensing
Micromachines, 2023 Complex optical elements have the advantages of improving image quality and optical performance and expanding the field of view. Therefore, it is widely used in X-ray scientific devices, adaptive optical elements, high-energy laser systems, and other ...
Xinxue Ma +4 more
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