Results 211 to 220 of about 9,035 (308)

Research on the design method of an optical system for star sensors with low centroid drift under under-corrected aberrations. [PDF]

iScience
Cao B, Meng Y, Wang H, Zhao S, Li X.
europepmc   +1 more source

Unsupervised Deep Representation Learning for Infrasound Phase Identification

Earth and Space Science, Volume 13, Issue 6, June 2026.
Abstract Infrasound phase identification is challenging because atmospheric variability strongly influences signal propagation on short timescales that are not resolved by standard atmospheric models. While traditional approaches rely on propagation modeling and array‐derived parameters, recent work suggests that waveform structure itself encodes ...
Miro Ronac Giannone, Stephen Arrowsmith, Gil Averbuch   +2 more
wiley   +1 more source

Effect of Accelerated Epi-Off Crosslinking on Optical Quality, Corneal Aberrations, and Epithelial Wavefront During Adolescence. [PDF]

Turk J Ophthalmol
Yıldırım Erdal BD, Kazancı B.
europepmc   +1 more source

Achromatic Petal‐Shaped Beam Generation and Information Encoding Based on Perfect Vortex Beam

Nanophotonics, Volume 15, Issue 10, 27 May 2026.
Based on petal‐shaped beams with controllable topological charge, size, and rotation angle, this work employs a spatially multiplexed all‐dielectric TiO2 transmissive array to numerically achieve achromatic petal‐shaped beams at three wavelengths: 480 nm, 530 nm, and 630 nm. Leveraging their unique intensity distribution and rotational characteristics,
Yilong Ge, Yifeng Wei, Jinqin Cui, Ziben Liu, Yang Liu, Bingxue Zhang, Dandan Wen, Peng Li, Sheng Liu, Jianlin Zhao, Dong Li   +10 more
wiley   +1 more source

Measurements of Pupillary Diameter and Wavefront Aberrations in Pregnant Women. [PDF]

Scientifica (Cairo), 2016
Altay Y, Altay MM, Demirok G, Balta O, Bolu H.   +4 more
europepmc   +1 more source

Recent Developments in Deep‐Ultraviolet Flat Optics

Nanophotonics, Volume 15, Issue 10, 27 May 2026.
Deep‐ultraviolet flat optics (DUVFO) is emerging as a key platform for next‐generation photonics, enabling advanced functionalities beyond conventional DUV optics. This review outlines materials, devices, and system advances, highlighting wide‐bandgap platforms, while identifying key challenges in dispersion control, characterization, and wafer‐scale ...
Omar A. M. Abdelraouf, Tao Wang, Zeng Wang   +2 more
wiley   +1 more source

In Vitro Repeatability and Inter-Device Agreement of Higher-Order Aberration Measurements in Scleral Lenses Using Two Hartmann-Shack Metrology Devices. [PDF]

Sensors (Basel)
Viviano F, Iovino M, Macedo-de-Araújo RJ, González-Meijome JM.   +3 more
europepmc   +1 more source

Customizable Fully Structured Vector Trajectory Beams in the Focal Plane via a Single‐Layer Metasurface

Nanophotonics, Volume 15, Issue 10, 27 May 2026.
This work introduces a unique class of structured light—trajectory beams—where all degrees of freedom evolve dynamically along the predefined trajectory. By employing computer‐generated holography, single‐layer metasurfaces achieve the complete decoupling of trajectory shape and the distributions of amplitude, phase, and polarization along the path ...
Zhibang Tan, Zebin Chen, Zepeng Chen, Yantao Zheng, Min Ouyang, Wei Hu, Qing Wang, Lijun Wu, Qian Shou   +8 more
wiley   +1 more source

Coefficient-metric gradient-based digital wavefront correction for full-field swept-source optical coherence tomography. [PDF]

Biomed Opt Express
Xu G, Love J, Smart TJ, Hsu D, Ju MJ, Sarunic MV.   +5 more
europepmc   +1 more source

Normative Data of Higher-Order Aberrations in Healthy Caucasian Eyes and Their Correlation with Age, Gender, and Spherical Equivalent. [PDF]

Clin Ophthalmol
Son HS, Labuz G, Blöck L, Savini G, Coutinho CP, Fernández J, Augustin VA, Auffarth GU.   +7 more
europepmc   +1 more source