Results 41 to 50 of about 1,461 (175)

An Automatic Optimized Method for a Digital Optical Phase Conjugation System in Focusing through Scattering Media

Applied Sciences, 2020
In this paper, a reliable automatic optimized method for a digital optical phase conjugation (DOPC) system based on a multipopulation genetic algorithm (MPGA) is proposed for improving the compensation quality of DOPC.
Pan Zhang, Zhan Li, Lu Han, Dean Liu, Jianqiang Zhu   +4 more
doaj   +1 more source

Informative feature selection based on the Zernike polynomial coefficients for various pathologies of the human eye cornea [PDF]

Компьютерная оптика, 2018
The study was devoted to the analysis of wavefront aberrations under changes of the cornea surface curvature in the human eye. The analysis was based on the representation of aberrations of the front and rear corneal surfaces as superposition of Zernike ...
Pavel Khorin, Nataly Ilyasova, Rustam Paringer   +2 more
doaj   +1 more source

Optimization of Spot Efficiency of Double-Helix Point Spread Function and Its Application in Intracellular Imaging

Applied Sciences, 2022
The nano-scale spatial positioning of nanoparticles in tumor cells can be achieved through the double-helix point spread functions (DH-PSF). Nevertheless, certain issues such as low light intensity concentration of the main lobes, the influence of the ...
Jun Yang, Hanliang Du, Zhenhao Chai, Lei Zhang, Ben Q. Li, Jianlei Cui, Xuesong Mei   +6 more
doaj   +1 more source

UniMR: A Plug‐and‐Play Framework of Automated Molecular Recognition for Scanning Tunneling Microscopy

Advanced Science, Volume 13, Issue 11, 23 February 2026.
UniMR, a training‐free framework for automated molecular recognition in STM images. By integrating adaptive feature selection with CLIP embeddings and Gaussian Mixture Modeling, UniMR achieves robust performance across diverse molecular systems and low‐resolution conditions.
Ziqiang Cao, Lingyin Zhang, Bingzheng Wu, Haonan Chen, Junhao Sun, Linghao Yan, Wenfei Li, Yangyang Wu, Zhifang Wang, Qigang Zhong, Lifeng Chi   +10 more
wiley   +1 more source

An alternative method for phase-unwrapping of interferometric data [PDF]

Journal of the European Optical Society-Rapid Publications, 2014
In this paper we present a novel algorithm for phase unwrapping where only a subset of data from the wrapped phase map is used to reconstruct the unwrapped phase map as a linear combination of radial basis functions (RBF’s).
de la Rosa-Miranda E., Gonzalez-Ramirez E., Villa-Hernández J. J., Berriel-Valdos L. R., Olvera-Olvera C., de la Rosa-Vargas J. I., Saucedo-Anaya T., Arceo Olague J. G., Alaniz-Lumbreras D., Castaño V. M.   +9 more
doaj   +1 more source

Measurement of Longitudinal Chromatic Aberration in the Last Crystalline Lens Surface Using Hartmann Test and Purkinje Images

Sensors, 2022
Research has shown that longitudinal chromatic aberration (LCA) of the human eye is generated across all of the eye’s optical surfaces. However, it may not be necessary to measure the LCA from the first surface of the cornea to the retina, as it is known
Uriel Calderon-Uribe, Geovanni Hernandez-Gomez, Armando Gomez-Vieyra   +2 more
doaj   +1 more source

Design of Compact Liquid Crystal on Silicon Projection Optics Utilizing a Common Freeform Optical Path for Augmented Reality Displays

Advanced Intelligent Systems, Volume 8, Issue 2, February 2026.
This study presents a compact freeform projection optics using dual wedge prisms for waveguide displays. Unlike previous designs that separate illumination and imaging paths, a freeform optical path integrates both. The system achieves a 32º field of view, 37.5 pixels per degree, and a total volume of less than 2 cm3.
Ximeng Wang, Dewen Cheng, Yuefan Shan, Da Wang, Tong Yang, Yongtian Wang   +5 more
wiley   +1 more source

Galaxy clusters morphology with Zernike polynomials: The first application on Planck Compton parameter maps [PDF]

EPJ Web of Conferences
The study of the morphology of 2D projected maps of galaxy clusters is a suitable approach to infer, from real data, the dynamical state of those systems.
Capalbo V., De Petris M., Cui W., Ferragamo A., Ruppin F., Yepes G.   +5 more
doaj   +1 more source

Phase‐Retrieved High‐Throughput Multi‐Channel Simultaneous Surface Plasmon Resonance Detection

Laser &Photonics Reviews, Volume 20, Issue 4, 19 February 2026.
This work presents a new phase‐retrieval high‐throughput multi‐channel simultaneous SPR detection framework. By integrating an objective lens‐based coupling system with a rotation‐based ePIE (r‐ePIE) phase retrieval on the back focal planes, this framework significantly reduces the minimum required detection area to reveal localized information.
Mengqi Shen, Xiaoping Jiang, Shibiao Wei, Michael G. Somekh   +3 more
wiley   +1 more source

Driving Innovation: The Impact of National Health Policies on Optometry Research in East Asia

The International Journal of Health Planning and Management, Volume 41, Issue 1, Page 37-46, January 2026.
ABSTRACT This study examines the optometric research landscape in three East Asian countries—China, Japan, and Korea—analysing how research trends align with each country's national health strategies. By evaluating published articles and reviews from national journals between 2006 March 2025, we identify key areas of focus, including paediatric ...
Jihye Ahn, Moonsung Choi
wiley   +1 more source