Results 31 to 40 of about 229,869 (143)
Trade-Off Asymmetric Profile for Extended-Depth-of-Focus Ocular Lens
Photonics, 2022 We explore the possibility of extending the depth of focus of an imaging lens with an asymmetric quartic phase-mask, while keeping the aberration within a relatively low level.
Lenny A. Romero +2 more
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Extended the depth of field and zoom microscope with varifocal lens
Scientific Reports, 2022 Extending the depth of field (DOF) is especially essential in thick and 3D sample imaging. However, it's difficult to achieve both large DOF and high resolution in a zoom microscope.
Yani Chen +4 more
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Extended depth-of-field in integral imaging by depth-dependent deconvolution
SPIE Proceedings, 2013 Integral Imaging is a technique to obtain true color 3D images that can provide full and continuous motion parallax for several viewers. The depth of field of these systems is mainly limited by the numerical aperture of each lenslet of the microlens array. A digital method has been developed to increase the depth of field of Integral Imaging systems in
Héctor Navarro Fructuoso +4 more
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Depth-of-Field-Extended Plenoptic Camera Based on Tunable Multi-Focus Liquid-Crystal Microlens Array
Sensors, 2020 Plenoptic cameras have received a wide range of research interest because it can record the 4D plenoptic function or radiance including the radiation power and ray direction.
Mingce Chen +7 more
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Monocular metasurface camera for passive single-shot 4D imaging
Nature Communications, 2023 The authors present a monocular camera equipped with a single-layer metalens for passive single-shot 4D imaging. It can simultaneously perform high-accuracy depth sensing and highfidelity polarization imaging over an extended depth of field.
Zicheng Shen +5 more
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All-in-focus image fusion for extended depth-of-field and 3D morphology recovery [PDF]
EPJ Web of ConferencesWe present a computationally efficient all-in-focus image fusion algorithm for z-stack microscopy data of biological samples. We employ the Modulus of Gradient of Color planes (MGC), which aggregates gradient magnitudes from all three RGB channels to ...
Cerda Teresa +2 more
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Real-time extended depth of field microscopy
Optics Express, 2008 We describe an optical microscope system whose focal setting can be changed quickly without moving the objective lens or specimen. Using this system, diffraction limited images can be acquired from a wide range of focal settings without introducing optical aberrations that degrade image quality. We combine this system with a real time Nipkow disc based
Botcherby, E +3 more
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Applied Sciences, 2018 Optical scanning holography (OSH) is a powerful and effective method for capturing the complex hologram of a three-dimensional (3-D) scene. Such captured complex hologram is called optical scanned hologram. However, reconstructing a focused image from an
Peter Wai Ming Tsang +2 more
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Distribution of the complex amplitude and intensity in a 3D scattering pattern formed by the optical system for an on-axis point object [PDF]
Компьютерная оптика, 2018 A quantitative evaluation of the depth of field of optical systems is given. Results of the calculation of the distribution of the complex amplitude and intensity in a three-dimensional scattering pattern formed by the optical system for an on-axis point
Sergey Koreshev +3 more
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Penetration of non-uniform electromagnetic field into conducting body
Electrical engineering & Electromechanics, 2021 The study is based on the exact analytical solution for the general conjugation problem of three-dimensional quasi-stationary field at a flat interface between dielectric and conducting media.
Yu. M. Vasetsky
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