Results 141 to 150 of about 9,035 (308)

Effects of Zernike wavefront aberrations on visual acuity measured using electromagnetic adaptive optics technology

, 2007
PURPOSE: This study measured the changed in visual acuity induced by individual Zernika ocular aberrations of various root-mean-square (RMS) magnitudes.METHODS: A crx1 Adaptive Optics Visual Simulator (Image Eyes) was used to modify the wavefront ...
Harms, Fabrice, Fabrice Harms, Karolinne Maia Rocha, Vabre, Laurent, Nicolas Chateau, Krueger, Ronald R., Ronald R Krueger, Chateau, Nicolas, Rocha, Karolinne Maia, Laurent Vabre   +9 more
core   +1 more source

High‐flux, moderate‐bandwidth, high‐energy X‐rays from lapped Si(111) crystals in a double‐crystal monochromator

Journal of Synchrotron Radiation, EarlyView.
Lapped Si(111) crystals in a double‐crystal monochromator provide high‐flux, spectrally pure, and moderate‐bandwidth X‐ray beams at 100 keV, offering a robust and cost‐effective alternative to perfect‐crystal and multilayer optics.Lapping the surfaces of Si(111) crystals in a double‐crystal monochromator significantly increases the intensity of high ...
Hiroshi Yamazaki, Kazuhiko Tahara, Yasuhiro Shimizu, Haruhiko Ohashi   +3 more
wiley   +1 more source

Adaptive Optics Methods to Rat Eye Properties: Impact of Pupil Diameter on Wavefront Detection

Photonics
Achieving a high-quality wavefront sensing light spot and accurate wavefront estimation of the rat eye is still challenging due to its large ocular aberrations and the back reflections from fundus multilayer.
Wen Kong, Jiangjie Huang, Yi He, Guohua Shi   +3 more
doaj   +1 more source

WFSuite: a Python software suite for X‐ray wavefront sensing and at‐wavelength metrology

Journal of Synchrotron Radiation, EarlyView.
WFSuite is an open‐source Python suite for speckle‐based X‐ray wavefront reconstruction, offering both relative metrology and absolute phase modules. It streamlines wavefront characterization and feedback control for synchrotron and XFEL applications.WFSuite is a Python‐based software suite for X‐ray wavefront sensing and at‐wavelength metrology for ...
Xianbo Shi, Luca Rebuffi, Zhi Qiao, Yu-Chung Lin, Lahsen Assoufid   +4 more
wiley   +1 more source

Adaptive Hartmann–Shack Wavefront Sensor

Photonics
In this work, an adaptive Hartmann–Shack wavefront sensor (AHSS) is proposed, designed, and evaluated. This sensor allows for the modification in the dynamic range of wavefront aberration measurement, defined as the range between the minimum and maximum ...
Jennyfer Morales-Marín, Walter Torres-Sepúlveda, Alejandro Mira-Agudelo   +2 more
doaj   +1 more source

Changes in monochromatic aberrations during accommodation

, 1999
Purpose: The monochromatic aberrations of the human eye are known to vary considerably between individuals. However little is known about the similarity in monochromatic aberrations between the right and left eyes of an individual and how the aberrations
Atchison, David A., Davis, Brett A., Collins, Michael J.   +2 more
core  

Diffractive wavefront correction for Fe L‐edge spectroscopy on the meV scale

Journal of Synchrotron Radiation, EarlyView.
We propose an aberration‐corrected, wavelength‐dispersive instrument for soft X‐ray spectroscopy at an energy‐resolving power of (5–6) × 104, designed for, for example, resonant inelastic X‐ray scattering at synchrotron beamlines or X‐ray free‐electron lasers.We propose a wavelength‐dispersive instrument for high‐resolution soft X‐ray spectroscopy at ...
Christoph Braig, Andrey Sokolov, Frank Siewert, Christian Seifert   +3 more
wiley   +1 more source

Ocular aberrations after wavefront optimized LASIK for myopia

Indian Journal of Ophthalmology, 2010
Purpose: To study the change in ocular aberrations after wavefront optimized (WFO) laser in situ keratomileusis ( Lasik ) for correction of myopia and to analyze causative factors that may influence them.
Padmanabhan Prema, Basuthkar Subam, Joseph Roy   +2 more
doaj  

Wavefront Aberrations of the Marmoset Eye

, 2003
Peer ...
Coletta, N.J., Troilo, D., Moskowitz, A., Nickla, D.L., Marcos, Susana   +4 more
openaire   +1 more source

Transformation of wavefront aberrations of holographic lenses for a general position of the exit pupil

, 1991
Equations are derived for determining third-order wavefront aberrations in the plane of the exit pupil from the known aberration in the plane of a holographic lens.
Carretero López, Luis, Beléndez, Augusto, Fimia Gil, Antonio   +2 more
core   +1 more source