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Achromatic super-oscillatory lenses with sub-wavelength focusing [article]

Guang Hui Yuan, Edward T. F. Rogers, Nikolay I. Zheludev
2017 arXiv   pre-print
Using the principle of super-oscillations we designed and fabricated a range of binary dielectric and metallic lenses for visible and infrared parts of the spectrum that are manufactured on silicon wafers  ...  Lenses are crucial to light-enabled technologies. Conventional lenses have been perfected to achieve near-diffraction-limited resolution and minimal chromatic aberrations.  ...  It is commonly believed that resolution of optical system that images object from the far-field to the far-field of the lens is limited to half the optical wavelength (the Abbe-Rayleigh diffraction limit  ... 
arXiv:1701.06863v1 fatcat:fqo5nxoox5clxfwkafnazlsxgi

Achromatic super-oscillatory lenses with sub-wavelength focusing

Guang Hui Yuan, Edward TF Rogers, Nikolay I Zheludev
2017 Light: Science & Applications  
Using the principle of super-oscillations, we designed and fabricated a range of binary dielectric and metallic lenses for visible and infrared parts of the spectrum that are manufactured on silicon wafers  ...  Lenses are crucial to light-enabled technologies. Conventional lenses have been perfected to achieve near-diffraction-limited resolution and minimal chromatic aberrations.  ...  We thank XH Li and LB Wang for assistance with fiber cleaving, G Adamo and H Krishnamoorthy for ellipsometry measurements of silicon wafers, and P Smith for fruitful discussions.  ... 
doi:10.1038/lsa.2017.36 pmid:30167290 fatcat:srusunyyjvhsbo4cknwpepet3q

End-to-end Learned, Optically Coded Super-resolution SPAD Camera

Qilin Sun, Jian Zhang, Xiong Dun, Bernard Ghanem, Yifan Peng, Wolfgang Heidrich
2020 ACM Transactions on Graphics  
The effectiveness of this joint design and reconstruction approach is demonstrated for a range of different applications, including high speed imaging, and time of flight depth imaging, as well as transient  ...  While our work specifically focuses on low-resolution SPAD sensors, similar approaches should prove effective for other emerging image sensor technologies with low pixel counts and low fill-factors.  ...  A notable exception is a recent work by , that employed an end-to-end optimization that jointly considers optics and image processing to extract optimal PSFs for the purposes of superresolution and depth  ... 
doi:10.1145/3372261 fatcat:h5a2sfktsvdjvf7jxx2wgxgfi4

Super-resolution multicolor fluorescence microscopy enabled by an apochromatic super-oscillatory lens with extended depth-of-focus [article]

Wenli Li, Pei He, Yulong Fan, Yangtao Du, Bo Gao, Zhiqin Chu, Chengxu An, Dangyuan Lei, Weizheng Yuan, Yiting Yu
2022 arXiv   pre-print
Multicolor super-resolution imaging remains an intractable challenge for both far-field and near-field based super-resolution techniques.  ...  The present study provides not only a practical route to far-field multicolor super-resolution imaging but also a viable approach for constructing imaging systems avoiding complex sample positioning and  ...  (LSIT201912W), the Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University (CX201908), and the City University of Hong Kong (9610456).  ... 
arXiv:2206.02335v1 fatcat:k6abfryqgbdlxogud6mynmx3zi

Super-achromatic optical coherence tomography capsule for ultrahigh-resolution imaging of esophagus

Kaiyan Li, Wenxuan Liang, Jessica Mavadia-Shukla, Hyeon-Cheol Park, Dawei Li, Wu Yuan, Suiren Wan, Xingde Li
2018 Journal of Biophotonics  
The capsule uses diffractive optics to manage chromatic aberration over a full ~200 nm spectral bandwidth centering around 830 nm, enabling to achieve super-achromaticity and an axial resolution of ~2.6  ...  Endoscopic optical coherence tomography (OCT) is a noninvasive technology allowing for imaging of tissue microanatomies of luminal organs in real time.  ...  Meyers for helpful discussions and assistance with in vivo experiments, and Honghua Guan for help with components machining.  ... 
doi:10.1002/jbio.201800205 pmid:30302923 pmcid:PMC6416074 fatcat:kbjaafkoqba3vluwclizjmqwvu

Metalens-Based Miniaturized Optical Systems

Bo Li, Wibool Piyawattanametha, Zhen Qiu
2019 Micromachines  
We discuss approaches for overcoming technical challenges in the bio-optics field, including a large field of view (FOV), chromatic aberration, and high-resolution imaging.  ...  Compared to conventional macro- or meso-scale optics manufacturing methods, the micro-machining process for metalenses is relatively straightforward and more suitable for mass production.  ...  Capasso's group and Suter's group at Harvard University have recently developed a new metalens-based endoscopic OCT [78] that can provide high-resolution imaging with extended depth.  ... 
doi:10.3390/mi10050310 pmid:31071944 pmcid:PMC6562435 fatcat:6cxlpcy5ibfyhp6eyhscm7w2oi

Front Matter: Volume 12136

Marc P. Georges, Gabriel Popescu, Nicolas Verrier
2022 Unconventional Optical Imaging III  
extended depth-of-field (EDoF) RGB imaging [12136-49] 12136 0N On the use of differentiable optical models for lens and neural network co-design [12136-50] 12136 0O Comparison of three methods for end-to-end  ...  optimization of hybrid optical/digital imaging systems with professional optical design software COMPUTING, MODELLING, DESIGN: AI FOR BIOMED 12136 0Q Mode-mapping qOBM microscopy to virtual hematoxylin  ... 
doi:10.1117/12.2642895 fatcat:pdyoog3wrzae5au4mmitlksqsi

Physics vs. Learned Priors: Rethinking Camera and Algorithm Design for Task-Specific Imaging [article]

Tzofi Klinghoffer, Siddharth Somasundaram, Kushagra Tiwary, Ramesh Raskar
2022 arXiv   pre-print
In this paper, we present a framework to understand the building blocks of this nascent field of end-to-end design of camera hardware and algorithms.  ...  Finally, we share current barriers to progress in end-to-end design, and hypothesize how these barriers can be overcome.  ...  [96] is applied to learning optimal parameters for the tasks of achromatic extended depth of field and super-resolution imaging, the proposed framework is task-agnostic and can be extended to optimize  ... 
arXiv:2204.09871v1 fatcat:niqi6uh7rjhd3i5o2wir2ihwty

A simple and cost-effective setup for super-resolution localization microscopy

Hongqiang Ma, Rao Fu, Jianquan Xu, Yang Liu
2017 Scientific Reports  
Single molecule localization microscopy (SMLM) has become a powerful imaging tool for biomedical research, but it is mostly available in imaging facilities and a small number of laboratories due to its  ...  Here, we evaluate the possibility of replacing high-cost components on standard SMLM with appropriate low-cost alternatives and build a simple but high-performance super-resolution SMLM setup.  ...  Acknowledgements This work was supported by National Institute of Health (R01EB016657, R01CA185363).  ... 
doi:10.1038/s41598-017-01606-6 pmid:28484239 pmcid:PMC5431525 fatcat:24zhxkynszgnzm3nqx4kleyuvi

Recent Advances in Planar Optics-Based Glasses-Free 3D Displays

Jianyu Hua, Wen Qiao, Linsen Chen
2022 Frontiers in Nanotechnology  
However, many geometric optics-based 3D displays suffer from a limited field of view (FOV), severe resolution degradation, and visual fatigue.  ...  As a result, planar optics hold great promise to tackle the critical challenges for glasses-free 3D displays, especially for portable electronics and transparent display applications.  ...  For example, an end-to-end optimization algorithm was introduced to design a diffractive achromatic lens.  ... 
doi:10.3389/fnano.2022.829011 fatcat:vhegvowfkzaptl3txpfteyeofq

Cost-effective optical coherence tomography spectrometer based on a tilted fiber Bragg grating

Stefan Remund, Anke Bossen, Xianfeng Chen, Ling Wang, Adedotun Adebayo, Lin Zhang, Boris Považay, Christoph Meier, Israel Gannot
2014 Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV  
Covering 740 nm to 860 nm the spectrometer was optically connected to a broadband white light interferometer and a wide field scan head and electronically to an acquisition and control computer.  ...  Based on a 45° UV-written PS750 TFBG a refractive spectrometer with 2.06 radiant/µm dispersion and a numerical aperture of 0.1 was set up and tested as integrated detector for an optical coherence tomography  ...  ACKNOWLEDGEMENTS The authors thank Michael Peyer for his support in image processing, Hansjörg Hegg for precise manufacturing of the mechanical elements, Dominic Krakowski from Mightex Systems for his  ... 
doi:10.1117/12.2039409 fatcat:7m4ijp4mire4rdsk2oo7hqh4jq

Recent Progress on Ultrathin Metalenses for Flat Optics

Seong-Won Moon, Yeseul Kim, Gwanho Yoon, Junsuk Rho
2020 iScience  
As technology advances, electrical devices such as smartphones have become more and more compact, leading to a demand for the continuous miniaturization of optical components.  ...  Therefore, over the last decade, great effort has been focused on developing metalenses to investigate and broaden the capabilities of metalenses for integration into future applications.  ...  optical devices, cameras for smartphones, and super-resolution microscopes.  ... 
doi:10.1016/j.isci.2020.101877 pmid:33344920 pmcid:PMC7736923 fatcat:3gk7pkagyvcfvnyavdpvbxacyy

Single Molecule Light Field Microscopy [article]

Ruth R Sims, Sohaib Abdul Rehman, Martin O Lenz, Adam Clark, Edward W Sanders, Aleks Ponjavic, Leila Muresan, Steven F Lee, Kevin O'Holleran
2020 bioRxiv   pre-print
We introduce single molecule light field microscopy (SMLFM), a novel 3D single molecule localization technique that is capable of up to 20 nm isotropic precision across a 6 μm depth of field.  ...  In this work we benchmark the performance of SMLFM and finally showcase its capabilities by imaging fluorescently labeled membranes of fixed eukaryotic cells below the diffraction limit.  ...  ACKNOWLEDGEMENTS This work was funded by the EPSRC (EP/L015455/1, EP/R025398/1) and The Royal Society University Research Fellowship to SFL (URF/R/80029).  ... 
doi:10.1101/2020.05.20.104802 fatcat:xe4xfl3x45chbhulbo5lvnfute

Computational Imaging and Artificial Intelligence: The Next Revolution of Mobile Vision [article]

Jinli Suo, Weihang Zhang, Jin Gong, Xin Yuan, David J. Brady, Qionghai Dai
2021 arXiv   pre-print
Traditional imaging systems based on the "capturing images first and processing afterwards" mechanism cannot meet this unprecedented demand.  ...  Differently, Computational Imaging (CI) systems are designed to capture high-dimensional data in an encoded manner to provide more information for mobile vision systems.Thanks to AI, CI can now be used  ...  An end-to-end optimization of optics and image processing for achromatic extended depth of field and super-resolution imaging framework was proposed in [202] .  ... 
arXiv:2109.08880v1 fatcat:nbwyxsweljagpb43nzwpk3lf7y

Smart Cameras [article]

David J. Brady, Minghao Hu, Chengyu Wang, Xuefei Yan, Lu Fang, Yiwnheng Zhu, Yang Tan, Ming Cheng, Zhan Ma
2020 arXiv   pre-print
Deep learning enables 10-100x reduction in electrical sensor power per pixel, 10x improvement in depth of field and dynamic range and 10-100x improvement in image pixel count.  ...  We review camera architecture in the age of artificial intelligence. Modern cameras use physical components and software to capture, compress and display image data.  ...  depth of field, range resolution and color fidelity.  ... 
arXiv:2002.04705v1 fatcat:277yq2oaujdoxbtqqsq6naodma
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