Articles with "dual focus" as a keyword



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Plasmonic Metalens for Narrowband Dual-Focus Imaging

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Published in 2017 at "Advanced Optical Materials"

DOI: 10.1002/adom.201700811

Abstract: A new type of metalens with the capability to selectively focus narrowband light is reported at different focal planes depending on polarization. Two zone planes with two different focal lengths are spatially multiplexed and encoded… read more here.

Keywords: plasmonic metalens; metalens narrowband; focus imaging; polarization ... See more keywords
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A Multimodal Sensing CMOS Imager Based on Dual‐Focus Imaging(Adv. Sci. 14/2023)

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Published in 2023 at "Advanced Science"

DOI: 10.1002/advs.202370082

Abstract: Complementary Metal‐Oxide‐Semiconductor Imager In article number 2206699, Qing Yang, Fenni Zhang, Di Wang, and co‐workers transform a complementary metal‐oxide‐semiconductor imager into a compact multimodal sensing platform (M‐imager) via a dual‐focus imaging strategy. A fingernail‐sized M‐imager… read more here.

Keywords: multimodal sensing; sensing cmos; focus imaging; dual focus ... See more keywords
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Eccentricity-dependent effects of simultaneous competing defocus on emmetropization in infant rhesus monkeys

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Published in 2020 at "Vision Research"

DOI: 10.1016/j.visres.2020.08.003

Abstract: Dual-focus lenses that impose simultaneous competing myopic defocus over the entire visual field produce axial hyperopic shifts in refractive error. The purpose of this study was to characterize the effects of eccentricity on the ability… read more here.

Keywords: power; dual focus; rhesus monkeys; infant ... See more keywords
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Scannable Dual-Focus Metalens with Hybrid Phase

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Published in 2023 at "Nano Letters"

DOI: 10.1021/acs.nanolett.2c04696

Abstract: Metalenses with two foci in the longitudinal or transverse direction, called bifocal or dual-focus metalenses, are promising building blocks in tomography techniques, data storage, and optical tweezers. For practical applications, relative movement between the beam… read more here.

Keywords: hybrid phase; dual focus; scannable dual; focus metalens ... See more keywords
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Visual-Olfactory Synergistic Perception Based on Dual-Focus Imaging and a Bionic Learning Architecture.

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Published in 2022 at "ACS sensors"

DOI: 10.1021/acssensors.2c01721

Abstract: The synergistic interaction of vision and olfaction is critical for both natural and artificial intelligence systems to recognize and adapt to complex environments. However, current bioinspired systems with visual and olfactory sensations are mostly assembled… read more here.

Keywords: visual olfactory; focus imaging; bionic learning; dual focus ... See more keywords
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Experimental Demonstration of Nadir Echo Removal in SAR Using Waveform Diversity and Dual-Focus Postprocessing

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Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2021.3095566

Abstract: Synthetic aperture radar (SAR) provides high-resolution images for remote-sensing applications regardless of sunlight and weather conditions. The pulsed operation of SAR may lead to an occurrence of nadir echoes in SAR images that significantly affect… read more here.

Keywords: demonstration; nadir echo; dual focus; focus postprocessing ... See more keywords
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Extending the depth of focus of fiber-optic optical coherence tomography using a chromatic dual-focus design.

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Published in 2018 at "Applied optics"

DOI: 10.1364/ao.57.006040

Abstract: We report a dual-focus fiber-optic probe designed to extend depth of focus (DOF) in high-resolution endoscopic optical coherence tomography. We exploited the broad spectral bandwidth of a supercontinuum source and, in the fiber probe, the… read more here.

Keywords: optical coherence; focus; depth focus; fiber optic ... See more keywords
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Dual-focus coherent anti-Stokes Raman scattering microscopy using a compact two-beam fiber laser source.

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Published in 2017 at "Optics letters"

DOI: 10.1364/ol.42.000183

Abstract: We have developed a dual-focus coherent anti-Stokes Raman scattering (CARS) microscope based on a dual output, compact fiber laser source. The underlying concepts of time-multiplexed, two-beam scanning and demultiplexed detection that we already employed for… read more here.

Keywords: laser source; microscopy; dual focus; fiber laser ... See more keywords