Hybrid Multiphase Fresnel Lenses on Silicon Wafers for Terahertz Frequencies
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Terahertz Science and Technology"
DOI: 10.1109/tthz.2023.3263638
Abstract: The hybrid multiphase Fresnel lenses (H-MPFLs) were developed on silicon wafer at the selected frequency of 585 GHz. For this reason, the design of a standard MPFL was modified thoroughly in various outer zone areas… read more here.
Keywords: fresnel lenses; multiphase fresnel; lenses silicon; hybrid multiphase ... See more keywords
Design and fabrication of Si-HDPE hybrid Fresnel lenses for infrared imaging systems.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.001202
Abstract: In this work, novel hybrid Fresnel lenses for infrared (IR) optical applications were designed and fabricated. The Fresnel structures were replicated from an ultraprecision diamond-turned aluminum mold to an extremely thin layer (tens of microns)… read more here.
Keywords: fresnel lenses; design fabrication; hybrid fresnel; fresnel ... See more keywords
Freeform Fresnel lenses with a low number of discontinuities for tailored illumination applications.
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DOI: 10.1364/oe.397983
Abstract: Most work in the field of freeform lens design has been focused on finding design algorithms for continuous freeform lens surfaces which transform an arbitrary ingoing light distribution into an arbitrary outgoing distribution. The shape… read more here.
Keywords: fresnel lenses; design; freeform; freeform fresnel ... See more keywords
Structure of microprismatic Fresnel lenses for creating uniform focal images.
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DOI: 10.1364/oe.438590
Abstract: Flat Fresnel lenses are known to form a point image in the focal plane. However, several practical applications require transforming lens to concentrate a parallel light beam into a uniformly illuminated light circle. We previously… read more here.
Keywords: lenses creating; fresnel lenses; structure microprismatic; microprismatic fresnel ... See more keywords
Speckle holographic imaging of a sound field using Fresnel lenses.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.469972
Abstract: In this Letter, we propose to use Fresnel lenses for holographic sound-field imaging. Although a Fresnel lens has never been used for sound-field imaging mainly due to its low imaging quality, it has several desired… read more here.
Keywords: field imaging; speckle holographic; sound field; fresnel lenses ... See more keywords
Seven-Grooved-Rod, Side-Pumping Concept for Highly Efficient TEM00-Mode Solar Laser Emission through Fresnel Lenses
Sign Up to like & getrecommendations! Published in 2023 at "Photonics"
DOI: 10.3390/photonics10060620
Abstract: Low-cost, lightweight, and easily available Fresnel lenses are a more alluring choice for solar laser power production, when compared to the costly and complex heliostat-parabolic mirror systems. Therefore, a seven-rod solar laser head was designed… read more here.
Keywords: tem00 mode; laser; solar laser; fresnel lenses ... See more keywords