Results 71 to 80 of about 145,574 (223)

Assessment of Wavefront Aberrations in Children with Myopia Against the Background of Ocular Surface Disorders in Combination with Computer Vision Syndrome Digital and Eye Strain

open access: yesOftalʹmologiâ
Purpose: to assess the state of the wavefront in children with myopia, who have various manifestations of digital eye strain and symptoms of ocular surface disorders, and to evaluate the diagnostic significance of wavefront criteria for assessing the ...
I. L. Plisov   +2 more
doaj   +1 more source

Demonstrating backflow in classical two beams’ interference

open access: yesNew Journal of Physics, 2022
The well-known interference pattern of bright and dark fringes was first observed for light beams back in 1801 by Thomas Young. The maximum visibility fringes occur when the irradiance of the two beams is equal, and as the ratio of the beam intensities ...
Anat Daniel   +3 more
doaj   +1 more source

Deep Learning-Based Prediction Algorithm on Atmospheric Turbulence-Induced Wavefront for Adaptive Optics

open access: yesIEEE Photonics Journal, 2022
Correction performance of an adaptive optics (AO) system is severely limited by its system latency under high temporal frequency distortions. Wavefront prediction methods has been proven to be an effective way to compensate system delay.
Ning Wang   +8 more
doaj   +1 more source

Adaptive optics with an infrared pyramid wavefront sensor at Keck

open access: yesJournal of Astronomical Telescopes Instruments and Systems, 2020
. The study of cold or obscured, red astrophysical sources can significantly benefit from adaptive optics (AO) systems employing infrared (IR) wavefront sensors.
C. Bond   +20 more
semanticscholar   +1 more source

Radio Positioning With EM Processing of the Spherical Wavefront [PDF]

open access: yesIEEE 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

The Correction of Eye Wavefront Using Contact Lenses and Their Impact on the Accommodative Response

open access: yesРоссийский офтальмологический журнал, 2018
Eye wavefront aberrations have a strong impact on the formation of an image on the retina and vision quality. A relationship has also been found between the aberrations and accommodation, which plays a significant role in visual performance and ...
E. P. Tarutta   +2 more
doaj   +1 more source

Influence of Image Processing Method on Wavefront Reconstruction Accuracy of Large-Aperture Laser

open access: yesPhotonics, 2023
In order to improve the wavefront reconstruction accuracy of a large-aperture laser, this paper proposed an adaptive window preprocessing algorithm based on the threshold center of gravity method (AW-TCoG).
Gangyu Wang   +5 more
doaj   +1 more source

Replay as wavefronts and theta sequences as bump oscillations in a grid cell attractor network

open access: yeseLife, 2019
Grid cells fire in sequences that represent rapid trajectories in space. During locomotion, theta sequences encode sweeps in position starting slightly behind the animal and ending ahead of it. During quiescence and slow wave sleep, bouts of synchronized
Louis Kang, Michael R DeWeese
doaj   +1 more source

Feedback-based wavefront shaping [PDF]

open access: yesOptics Express, 2015
Light scattering was thought to be the fundamental limitation for the depth at which optical imaging methods can retain their resolution and sensitivity. However, it was shown that light can be focused inside even the most strongly scattering objects by spatially shaping the wavefront of the incident light.
openaire   +3 more sources

The Individual Virtual Eye: a Computer Model for Advanced Intraocular Lens Calculation

open access: yesJournal of Optometry, 2009
Purpose: To describe the individual virtual eye, a computer model of a human eye with respect to its optical properties. It is based on measurements of an individual person and one of its major application is calculating intraocular lenses (IOLs) for ...
Jens Einighammer   +3 more
doaj   +1 more source

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