Results 1 to 10 of about 229,869 (143)

Medical and technical aspects of using intraocular lenses with extended depth of field

Российский офтальмологический журнал, 2023
Purpose: to analyse the medical and technical aspects of intraocular lenses (IOLs) with extended depth of field (EDOF). Literature analysis was performed in the PubMed international database, the search keywords being “IOL with extended depth of field ...
M. E. Konovalov, A. V. Morenko
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Continuous optical zoom microscope with extended depth of field and 3D reconstruction

PhotoniX, 2022
Microscope such as fluorescence microscope, confocal microscope and two-photon microscope plays an important role in life science, laser processing and other fields. However, most microscopes only have discrete zoom rates.
Chao Liu, Zhao Jiang, Xin Wang, Yi Zheng, Yi-Wei Zheng, Qiong-Hua Wang   +5 more
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Rethinking low-cost microscopy workflow: Image enhancement using deep based Extended Depth of Field methods

Intelligent Systems with Applications, 2023
Microscopic techniques in low-to-middle income countries are constrained by the lack of adequate equipment and trained operators. Since light microscopy delivers crucial methods for the diagnosis and screening of numerous diseases, several efforts have ...
Tomé Albuquerque, Luís Rosado, Ricardo Cruz, Maria João M. Vasconcelos, Tiago Oliveira, Jaime S. Cardoso   +5 more
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Microscope with extension of the depth of field by employing a cubic phase plate on the surface of lens

Results in Optics, 2021
An incoherent optical system with wavefront coding extends the depth of field (DOF) by employing a cubic phase plate (CPP). We designed a digital microscope with a CPP in the aperture stop and on the surface of the lens, which extended the DOF.
Chi-Feng Lee, Cheng-Chung Lee
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Extended Depth-of-Field of a Miniature Optical Endoscope Using Wavefront Coding

Applied Sciences, 2020
Endoscopic imaging is an indispensable tool for visual inspection of surfaces in hard-to-access places. The conventional optical endoscope only enables imaging the regions that lie close to the focal plane, and therefore improving the depth of field (DOF)
Lei Yang, Meng Chen, Jin Wang, Meng Zhu, Tong Yang, Shimin Zhu, Hongbo Xie   +6 more
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Designing high-efficiency extended depth-of-focus metalens via topology-shape optimization

Nanophotonics, 2022
Longitudinal optical field modulation is of critical importance in a wide range of applications, including optical imaging, spectroscopy, and optical manipulation.
Zheng Yuhan, Xu Mingfeng, Pu Mingbo, Zhang Fei, Sang Di, Guo Yinghui, Li Xiong, Ma Xiaoliang, Luo Xiangang   +8 more
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Test of the Practicality and Feasibility of EDoF-Empowered Image Sensors for Long-Range Biometrics

Sensors, 2016
For many practical applications of image sensors, how to extend the depth-of-field (DoF) is an important research topic; if successfully implemented, it could be beneficial in various applications, from photography to biometrics. In this work, we want to
Sheng-Hsun Hsieh, Yung-Hui Li, Chung-Hao Tien   +2 more
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Investigation of extended depth-of-field f/8 camera with optimized cubic phase mask and digital restoration [PDF]

EPJ Web of Conferences, 2020
An investigation of extended depth-of-field camera with optimized phase mask and digital restoration is presented. The goal of this paper is to implement the wavefront coding technique without affecting much of the original design, and the design has ...
Chiu Po-Sheng, Vonmetz Kurt, Canini Federico, Urbach H. Paul   +3 more
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Multispectral Extended Depth-of-Field Imaging via Stochastic Wavefront Optimization

IEEE Open Journal of Signal Processing
Extended depth-of-field (EDoF) is a desirable attribute for imaging systems where all features in the scene are in focus despite their relative distance.
Exequiel Oliva, Nelson Diaz, Samuel Pinilla, Esteban Vera   +3 more
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All-in-Focus Sweep Imaging Based on Wigner Distribution Function

IEEE Access, 2018
To extend the depth of field, the all-in-focus image can be achieved via the computational imaging method by designing the data acquisition process under the condition of maintaining the signal-to-noise ratio.
Chang Liu, Shan Gao, Xing Zhao, Jun Qiu
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