Results 31 to 40 of about 1,288 (199)

Infrared imaging with a wavefront-coded singlet lens

Optics Express, 2009
We describe the use of wavefront coding for the mitigation of optical aberrations in a thermal imaging system. Diffraction-limited imaging is demonstrated with a simple singlet which enables an approximate halving in length and mass of the optical system compared to an equivalent two-element lens.
Gonzalo, Muyo, Amritpal, Singh, Mathias, Andersson, David, Huckridge, Andrew, Wood, Andrew R, Harvey   +5 more
openaire   +2 more sources

Reconfigurable intelligent surface with high optical-transparency based on metalmesh

Journal of Information and Intelligence, 2023
Reconfigurable intelligent surfaces (RISs) have aroused extensive attentions from academic and wireless communication communities due to their abilities to customize the electromagnetic (EM) characteristics of the propagation channels flexibly and ...
Jing Cheng Liang, Peng Zhang, Qiang Cheng, Tie Jun Cui   +3 more
doaj   +1 more source

GLA-ResUNet: A global-local attention framework for decoding in wavefront coding imaging system [PDF]

AIP Advances
Wavefront coding technology disperses incident laser energy by employing a pupil-phase mask, effectively reducing the energy density on the detector target and enhancing the camera’s anti-laser capability.
Qing Ye, Ye Liu, Yunlong Wu, Jintian Bian, Weibing Sun, Junyu Zhang, Ying Chen, Haoqi Luo   +7 more
doaj   +1 more source

Terahertz wavefront engineering using a hard-coded metasurface

Optical and Quantum Electronics, 2023
During the past few years, coding metamaterials (MM) drew significant attention, where the far-field scattering/transmission pattern of the electromagnetic wave (particularly in the THz regime) can be encoded into a single or few-bit digitized phase-response of the metasurface, thereby enabling a full digital control.
Noori, Aileen, Akyurek, Bora, Demirhan, Yasemin, Ozyuzer, Lutfi, Guven, Kaan, Altan, Hakan, Aygun, Gulnur   +6 more
openaire   +2 more sources

Azobenzene's Cross‐Scale Optics and Photonics: Molecular Photoswitching, Mesoscopic Material Motions, and Adaptive Devices

Advanced Materials, EarlyView.
Azobenzene photoswitches translate molecular‐scale E/Z photoisomerization into macroscopic material responses and device‐level photonic functions. This Review highlights how azobenzene research has evolved from molecular photochemistry to photoalignment, mass migration, photomechanics, and heat release, ultimately enabling holography, reconfigurable ...
Heeju Son, Soyul Kwak, Heerin Noh, Minsang Kim, Doyeon Noh, Subhayan Chakraborty, Jaewon Lee, YongDeok Cho, Kyeongsoo Kim, Taewoong Eom, Moonyoung Kim, Jangwon Kim, Hoyoung Lee, Soyoung Lee, Jaehun Kim, Grace G. D. Han, Shin‐Tson Wu, Stefano Oscurato, Arri Priimagi, Marina Saphiannikova, Seungwoo Lee   +20 more
wiley   +1 more source

Research Progress in Information Processing Methods for Computational Optical Systems

Shuju Caiji Yu Chuli
Aberration is a crucial factor that restricts the imaging performance of optical systems， leading to degraded imaging effects such as blurred details and reduced resolution.
SHAO Xiaopeng, DENG Yishuang, CHEN Yutong, ZHANG Yinuo, WANG Huihui, WU Tengfei, WEI Shijie   +6 more
doaj   +1 more source

The Statistical Estimation Averaging Method to Express the Effective Electromagnetic Parameters over a Planar Information Meta-Surface

Mathematics, 2022
The electromagnetic scattering of a meta-surface, formed by a honeycomb substrate or periodical arranged meta-materials, has great meanings to communication technologies.
Ting-Ting Gu, Tie-Jun Cui
doaj   +1 more source

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, EarlyView.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +8 more
wiley   +1 more source

Possible Application of Wavefront Coding to the LSST [PDF]

, 2006
6 pages, 2 ...
openaire   +4 more sources

Introduction to Wavefront Coding for Incoherent Imaging [PDF]

EAS Publications Series, 2013
This book is a collection of 19 articles which reflect the courses given at the Collège de France/Summer school “Reconstruction d'images − Applications astrophysiques“ held in Nice and Fréjus, France, from June 18 to 22, 2012. The articles presented in this volume address emerging concepts and methods that are useful in the complex process of improving
openaire   +3 more sources