Results 21 to 30 of about 9,035 (308)
Wavefront sensorless adaptive optics for large aberrations
Optics Letters, 2006 In some adaptive optics systems the aberration is determined not by using a wavefront sensor but by sequential optimization of the adaptive correction element. Efficient schemes for the control of such systems are essential if they are to be effective.
Booth, Martin, Booth, MJ
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Optimization of nanotube electrode geometry in a liquid crystal media from wavefront aberrations
Applied Optics, 2012 This paper presents experimental optimization of number and geometry of nanotube electrodes in a liquid crystal media from wavefront aberrations for realizing nanophotonic devices. The refractive-index gradient profiles from different nanotube geometries-
Rajasekharan, R +6 more
core +2 more sources
Determining the accommodative response from wavefront aberrations
Journal of Vision, 2010 The purpose of this study was to evaluate some of the methods used to calculate objective refractions from wavefront aberrations, to determine their applicability for accommodation research. A wavefront analyzer was used to measure the ocular aberrations of 13 emmetropes and 17 myopes at distance, and 4 near target vergences: 2, 3, 4, and 5 D.
Janice, Tarrant +2 more
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Repeatability of i.Profiler for measuring wavefront aberrations in healthy eyes
International ophtalmology, 2021 To evaluate the repeatability of wavefront aberration measurements and the correlation between corneal aberration and pupil size in normal eyes using a wavefront-based autorefractor (i.ProfilerPlus; Carl Zeiss Vision, Germany).
X. Liao, Mei Wang, Q. Tan, C. Lan
semanticscholar +1 more source
Relationship between higher-order wavefront aberrations and natural progression of myopia in schoolchildren. [PDF]
Sci Rep, 2017 This study investigated the relationship between higher-order aberrations (HOAs) and myopia progression as well as axial elongation in schoolchildren. We examined cycloplegic refraction, axial length, and wavefront aberrations prospectively in 71 myopic ...
Hiraoka T +4 more
europepmc +2 more sources
Компьютерная оптика, 2021 The use of a multichannel wavefront sensor matched with phase Zernike functions to determine the type and magnitude of aberration in the analyzed wavefront is investigated.
P.A. Khorin +2 more
doaj +1 more source
Fast High-Resolution Phase Diversity Wavefront Sensing with L-BFGS Algorithm
Sensors, 2023 The presence of manufacture error in large mirrors introduces high-order aberrations, which can severely influence the intensity distribution of point spread function.
Haoyuan Zhang +6 more
doaj +1 more source
Association between Offset of the Pupil Center from the Corneal Vertex and Wavefront Aberration
Journal of Optometry, 2008 Purpose: To investigate the influence of offsets of the pupil center from the corneal vertex on wavefront aberrations in the anterior cornea and the whole eye.
Fan Lu +7 more
doaj +1 more source
Wavefront Reconstruction of Shack-Hartmann with Under-Sampling of Sub-Apertures
Photonics, 2023 Shack-Hartmann wavefront sensor plays a key role in adaptive optics (AO) systems, which detect the aberrant wavefront by an array of micro-lenslets across the aperture pupil.
Jian Huang +3 more
doaj +1 more source
Accommodation to Wavefront Vergence and Chromatic Aberration [PDF]
Optometry and Vision Science, 2011 Purpose. Longitudinal chromatic aberration (LCA) provides a cue to accommodation with small pupils. However, large pupils increase monochromatic aberrations, which may obscure chromatic blur. In this study, we examined the effect of pupil size and LCA on accommodation.
Yinan, Wang +4 more
openaire +2 more sources