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A Review on Wavefront Reconstruction Methods
2021 4th International Conference on Information Systems and Computer Aided Education, 2021Turbulence in the atmosphere in nature leads to the change of local optical path. The imaging wavefront of starlight is constantly distorted and the energy is constantly dissipated, which eventually leads to the blurring of telescope imaging and the degradation of resolution.
Ke Wang, Kefeng Xu
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Wavefront reconstruction with the cone sensor
2020 35th International Conference on Image and Vision Computing New Zealand (IVCNZ), 2020Wavefronts of light from celestial objects are aberrated by Earth’s evolving atmosphere, causing images captured by ground-based telescopes to be distorted. The slope of the phase of the wavefront can be estimated by a pyramid wavefront sensor, which subdivides the complex field at the focal plane of the telescope, producing four images of the aperture.
Richard M. Clare +2 more
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Multilcolor Wavefront Reconstruction
Applied Optics, 1967Two and three primary colors derived from an He-Ne gas laser and an argon gas laser were employed in recording and reconstructing holograms. For the tricolor case it is possible to reconstruct a three-dimensional multicolor image which possesses almost all the natural hues of the original object.
A A, Friesem, R J, Fedorowicz
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Microscopy by Wavefront Reconstruction*
Journal of the Optical Society of America, 1965Magnification by the wavefront-reconstruction imaging method is discussed. An analysis is given of the aberrations which arise in this type of imagery. Conditions are derived which lead to aberration-free reconstructions.
Emmett N. Leith +2 more
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Wavefront reconstruction photography
Physics Today, 1965Wavefront reconstruction, or holography, is a fascinating photographic process which is a major departure from conventional photography. In this process, discovered in 1947 by D. Gabor of Imperial College, London, the photosensitive device does not directly record an image of the subject; instead, the electromagnetic waves reflected or scattered from ...
Emmett Leith, Juris Upatnieks
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Wavefront reconstruction for the Shack-Hartmann wavefront sensor
SPIE Proceedings, 2002The Shack-Hartmann wavefront sensor is a powerful tool for optical analysis. A vital step in the data analysis chain involves reconstructing the wavefront incident upon the lenslet array from hundreds or thousands of slope measurements. We discuss here the basics of reconstruction and the differences in reconstruction for the case of Hartmann and Shack-
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Incoherent wavefront reconstruction by a retroemission device
Optics Letters, 2015This Letter addresses wavefront reconstruction by a retroemission device (REM). REM represents a lenslet array mounted on a substrate made of photoluminescent optical material, such as a polymer film impregnated with upconversion nanoparticles. An excitation light wavefront incident on the REM was sampled by the lenslet array piece-wise.
Eugenyi V, Khaydukov +2 more
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Acousto-optic wavefront sensing and reconstruction
Applied Optics, 2008We employ an acousto-optic cell as a tunable-pitch wavefront sensor and study its performance. The index of refraction of two cross-standing waves forms, in the near field, an adjustable array of caustics. These caustics, similar to the lenslets used for Hartmann-Shack sensing, were measured to have an extended focal relief of 200 times their pitch. We
Adir, Stup +3 more
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Iterative Wavefront Reconstruction for Astronomical Imaging
SIAM Journal on Scientific Computing, 2013Obtaining high resolution images of space objects from ground based telescopes is challenging, and often requires computational postprocessing methods to remove blur caused by atmospheric turbulence. In order for an image deblurring (deconvolution) algorithm to be effective, it is important to have a good approximation of the blurring operator.
Qing Chu +2 more
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Wavefront reconstruction from its gradients
Journal of the Optical Society of America A, 2006Wavefronts reconstructed from measured gradients are composed of a straightforward integration of the measured data, plus a correction term that disappears when there are no measurement errors. For regions of any shape, this term is a solution of Poisson's equation with Dirichlet conditions (V = 0 on the boundaries).
Amos, Talmi, Erez N, Ribak
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