Results 21 to 30 of about 142,742 (388)
Method for arbitrary phase transformation by a slab based on transformation optics and the principle of equal optical path [PDF]
Journal of the European Optical Society-Rapid Publications, 2012 The optical path lengths travelled by rays across a wavefront essentially determine the resulting phase front irrespective of the shape of a medium according to the principle of equal optical path.
Ke Y., Shu W., Luo H., Wen S., Fan D.
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Guidestar-free image-guided wavefront shaping [PDF]
Science Advances, 2020 Optical imaging through turbid samples and fibers is made possible by adaptive correction of scattering guided by image quality. Optical imaging through scattering media is a fundamental challenge in many applications.
Tomer Yeminy, O. Katz
semanticscholar +1 more source
Fourier transform-wavefront reconstruction for the pyramid wavefront sensor [PDF]
1st AO4ELT conference - Adaptive Optics for Extremely Large Telescopes, 2010 The application of Fourier-transform reconstruction techniques to the pyramid wavefront sensor has been investigated. A preliminary study based on end-to-end simulations of an adaptive optics system with ≈40x40 subapertures and actuators shows that the performance of the Fourier-transform reconstructor (FTR) is of the same order of magnitude than the ...
Quirós-Pacheco, Fernando +2 more
openaire +4 more sources
Optical Bench Analysis of 2 Depth of Focus Intraocular Lenses
Biomedicine Hub, 2021 Background: The aim of the study was to analyze the objective optical properties of 2 enhanced depth of focus (EDoF) intraocular lenses (IOLs) using optical bench analysis.
Andreas F. Borkenstein +3 more
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Journal of the European Optical Society-Rapid Publications, 2022 The classic equation for decomposing the wavefront aberrations of axis-symmetrical optical systems has the form, W ( h 0 , ρ , ϕ ) = ∑ j = 0 ∝ ∑ p = 0 ∝ ∑ m = 0 ∝ C 2 j + m 2 p + m m ( h 0 ...
Lin Psang
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Quantitative surface normal measurement by a wavefront camera [PDF]
, 2012 A compact wavefront camera that allows users to quantitatively measure the intensity and wavefront at a remote object plane is reported. The camera is built from a chip-scale wavefront sensor that we previously developed.
Cui, Xiquan +3 more
core +1 more source
High Power Laser Science and Engineering, 2023 The spatial distribution of beams with orbital angular momentum in the far field is known to be extremely sensitive to angular aberrations, such as astigmatism, coma and trefoil. This poses a challenge for conventional beam optimization strategies when a
J. B. Ohland +6 more
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Radio Positioning With EM Processing of the Spherical Wavefront [PDF]
IEEE Transactions on Wireless Communications, 2019 Next 5G and beyond applications have attracted a tremendous interest towards systems using antenna arrays with an extremely large number of antennas where the technology conceived for communication might also be exploited for high-accuracy positioning ...
F. Guidi, D. Dardari
semanticscholar +1 more source
Optical Aberrations and Wavefront
Türk Oftalmoloji Dergisi, 2014 The deviation of light to create normal retinal image in the optical system is called aberration. Aberrations are divided two subgroup: low-order aberrations (defocus: spherical and cylindrical refractive errors) and high-order aberrations (coma ...
Nihat Polat +2 more
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Компьютерная оптика, 2022 The transport-of-intensity equation provides a new non-interferometric and non-iterative access to quantitative information about the phase of a light wave by measuring intensity distributions. This equation can be used to implement a simple and accurate
N.G. Stsepuro +5 more
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