Results 321 to 330 of about 154,766 (375)

Vision and Quality of Life in Fuchs' Endothelial Dystrophy Using a Prototype Aberrometer: A Cross-Sectional Study. [PDF]

Clin Ophthalmol
Velarde-Rodriguez G, Belda-Para C, Velasco-Ocaña M, Marichal-Hernandez JG, Mahíllo-Fernández I, Jiménez-Alfaro I, Wacker K, Romano V, Rodriguez-Ramos JM, Alejandre-Alba N.   +9 more
europepmc   +1 more source

Computational Adaptive Optics for HAR Hybrid Trench Array Topography Measurement by Utilizing Coherence Scanning Interferometry. [PDF]

Sensors (Basel)
Qiao W, Gao Z, Yuan Q, Chen L, Guo Z, Huo X, Wang Q.   +6 more
europepmc   +1 more source

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Non-local metasurfaces for spectrally decoupled wavefront manipulation and eye tracking

Nature Nanotechnology, 2021
Metasurface-based optical elements typically manipulate light waves by imparting space-variant changes in the amplitude and phase with a dense array of scattering nanostructures.
Jung-Hwan Song, J. van de Groep, S. Kim, M. Brongersma   +3 more
semanticscholar   +1 more source

Fourier wavefront reconstruction with a pyramid wavefront sensor

Adaptive Optics Systems VI, 2018
Using Fourier methods to reconstruct the phase measured by a wavefront sensor (WFS) can significantly re- duce the number of computations required, as well as easily enable predictive reconstruction methods based on knowledge of the adaptive optics system, atmospheric turbulence and wind profile. Previous work on Fourier re- construction has focused on
Bond, Charlotte, Correia, Carlos, Sauvage, Jean-François, El Hadi, Kacem, Neichel, Benoit, Fusco, Thierry   +5 more
openaire   +3 more sources

A comparison of wavefront-optimized and wavefront-guided ablations

Current Opinion in Ophthalmology, 2009
Optimized aspherical as well as custom wavefront-guided treatments attempt to reduce the induction of visually disturbing aberrations than can occur with conventional spherocylindrical corneal ablation. This review highlights a comparison of the advances and limitations of the two treatments.Optimized aspherical as well as wavefront-guided corneal ...
Roy S. Chuck, Elliott H. Myrowitz
openaire   +3 more sources

Hybrid wavefront sensor for the fast detection of wavefront disturbances

Applied Optics, 2012
Strongly aberrated wavefronts lead to inaccuracies and nonlinearities in holography-based modal wavefront sensing (HMWS). In this contribution, a low-resolution Shack-Hartmann sensor (LRSHS) is incorporated into HMWS via a compact holographic design to extend the dynamic range of HMWS.
Wolfgang Osten, Tobias Haist, Shihao Dong   +2 more
openaire   +3 more sources

High-efficiency ultrathin terahertz geometric metasurface for full-space wavefront manipulation at two frequencies

, 2020
It has been demonstrated that metasurfaces have the ability to manipulate the wavefront. However, most multifunctional metasurfaces reported to date only operate in either reflection or transmission mode.
Junpeng Fan, Yongzhi Cheng, B. He
semanticscholar   +1 more source

Broadband high-efficiency cross-polarization conversion and multi-functional wavefront manipulation based on chiral structure metasurface for terahertz wave

Journal of Physics D: Applied Physics, 2019
In this paper, a broadband and high-efficient tri-layered chiral structure metasurface (CSM) for linear polarization conversion and multi-functional wavefront manipulation was proposed and investigated numerically in terahertz region.
Junpeng Fan, Yongzhi Cheng
semanticscholar   +1 more source

Off-axis digital holographic multiplexing for rapid wavefront acquisition and processing

Advances in Optics and Photonics, 2020
Off-axis holographic multiplexing involves capturing several complex wavefronts, each encoded into off-axis holograms with different interference fringe orientations, simultaneously, with a single camera acquisition.
N. Shaked, V. Micó, Maciej Trusiak, A. Kuś, Simcha K. Mirsky   +4 more
semanticscholar   +1 more source