Results 51 to 60 of about 6,169 (204)

Parafoveal and Perifoveal Accommodation Response to Defocus Changes Induced by a Tunable Lens

Applied Sciences, 2023
The accommodative response of the human eye is predominantly driven by foveal vision, but reacts also to off-foveal stimuli. Here, we report on monocular accommodation measurements using parafoveal and perifoveal annular stimuli centered around the fovea
Najnin Sharmin, Petros Papadogiannis, Dmitry Romashchenko, Linda Lundström, Brian Vohnsen   +4 more
doaj   +1 more source

The QuickSee autorefractor reliably measures the accommodative response in children compared with the Shin‐Nippon autorefractor

Ophthalmic and Physiological Optics, Volume 45, Issue 7, Page 1581-1590, November 2025.
Abstract Introduction This study evaluated the QuickSee autorefractor for measurement of the accommodative response in a cohort of children without significant ametropia, and compared the findings to those determined using the gold‐standard Shin‐Nippon device. Methods Children aged 5–7 years were recruited.
Jane M. Fulton, Rebecca E. Leighton, Tuyishime Didier Fidele Uwacu, Bruce Moore, Julie‐Anne Little   +4 more
wiley   +1 more source

A direct comparison between a MEMS deformable mirror and a liquid crystal spatial light modulator in signal-based wavefront sensing [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
Aberrations degrade the performance of optical systems in terms of resolution and signal-to-noise ratio. This work explores the feasibility of a signal-based wavefront sensor, which employs a search algorithm to estimate Zernike coefficients of given ...
Jewel A. R., Akondi V., Vohnsen B.
doaj   +1 more source

Single-atom trapping in holographic 2D arrays of microtraps with arbitrary geometries

, 2014
We demonstrate single-atom trapping in two-dimensional arrays of microtraps with arbitrary geometries. We generate the arrays using a Spatial Light Modulator (SLM), with which we imprint an appropriate phase pattern on an optical dipole trap beam prior ...
Barredo, Daniel, Browaeys, Antoine, Béguin, Lucas, Labuhn, Henning, Lahaye, Thierry, Nogrette, Florence, Ravets, Sylvain, Vernier, Aline   +7 more
core   +5 more sources

Spin‐Orbit Photonics with Potato Starch Lenses

Advanced Optical Materials, Volume 13, Issue 21, July 25, 2025.
Native potato starch spherulites are introduced as volumetric optical elements that modulate both dynamic and geometric phases of light. These spherulites focus light and generate optical vortices via spin‐orbit interaction, functioning as polarization‐sensitive microlenses. Their unique radial anisotropy enables applications in vortex beam generation,
Petr Bouchal, Petr Viewegh, Petr Liška, Radim Chmelík, Zdeněk Bouchal   +4 more
wiley   +1 more source

Pupil stabilization for SPHERE's extreme AO and high performance coronagraph system [PDF]

, 2007
We propose a new concept of pupil motion sensor for astronomical adaptive optics systems and present experimental results obtained during the first laboratory validation of this concept.
Beuzit, J. -L., Charton, J., Fusco, T., Jocou, L., Montagnier, G., Mouillet, D.   +5 more
core   +2 more sources

Research Progress on Atmospheric Turbulence Perception and Correction Based on Adaptive Optics and Deep Learning

Advanced Photonics Research, Volume 6, Issue 7, July 2025.
This work presents a systematic review of atmospheric turbulence fundamentals, including theoretical formulations and adaptive optics‐based mitigation strategies. This includes an in‐depth examination of the devices, theories, and methodologies associated with traditional correction approaches.
Qinghui Liu, Yihang Di, Mengmeng Zhang, Zhenbo Ren, Jianglei Di, Jianlin Zhao   +5 more
wiley   +1 more source

Laboratory and telescope demonstration of the TP3-WFS for the adaptive optics segment of AOLI [PDF]

, 2017
AOLI (Adaptive Optics Lucky Imager) is a state-of-art instrument that combines adaptive optics (AO) and lucky imaging (LI) with the objective of obtaining diffraction limited images in visible wavelength at mid- and big-size ground-based telescopes.
Colodro Conde, Carlos, Femenia, Bruno, Fernández Valdivia Juan José, King, David L., Labadie, Lucas, López López, Roberto, Mackay, Craig, Oscoz Abad, Alejandro, Puga Antolín, Marta, Pérez Garrido, Antonio, Rebolo López, Rafael, Rodríguez Coira, Gustavo, Rodríguez Ramos, José Manuel, Rodríguez Ramos, Luis Fernando, Toledo Moreo, Rafael, Toledo Moreo, Rafael, Villo Pérez, Isidro   +16 more
core   +3 more sources

Optical characterisation and vision quality assessment of two myopia control contact lenses

Ophthalmic and Physiological Optics, Volume 45, Issue 5, Page 1142-1150, July 2025.
Abstract Purpose This investigation examined the image and vision quality of two commercially available daily disposable myopia control soft contact lenses. Methods Wavefront errors were measured with an SHS Ophthalmic aberrometer for two myopia control soft contact lenses: a coaxially designed dual‐focus lens (omafilcon A, CooperVision MiSight® 1 day,
Josh Richards, Matt Jaskulski, Jill Woods, Sarah Guthrie, Pete Kollbaum   +4 more
wiley   +1 more source

Adaptive optics design for high-energy kW-class multi-slab laser amplifiers

High Power Laser Science and Engineering
We demonstrate real-time wavefront correction in a high-energy high-average-power DiPOLE100/Bivoj laser using adaptive optics. A bimorph deformable mirror and a Shack–Hartmann wavefront sensor reduced wavefront error 10-fold and improved the Strehl ratio
Tomáš Paliesek, Martin Divoký, Jan Pilař, Martin Smrž, Tomáš Mocek   +4 more
doaj   +1 more source