Results 41 to 50 of about 32,036 (281)

Experimental Comparison between Spherical and Refractive Optics in a Concentrating Photovoltaic System

open access: yesEnergies, 2021
Since there are not standard configurations of the Concentrating Photovoltaic (CPV) systems, several types of optics are designed and analyzed. In this paper, the optical performances of a spherical mirror and a commonly used Fresnel lens of the same ...
Carlo Renno
doaj   +1 more source

Treatment of Color Filter Wastewater by Fresnel Lens Enhanced Solar Photo-Fenton Process

open access: yesAdvances in Materials Science and Engineering, 2012
Treatment of color filter wastewater using solar photo-Fenton process enhanced by high-concentrating Fresnel lens was investigated in this paper. Optimal reaction conditions based on response surface methodology (RSM) were established as under an initial
Wen-shiuh Kuo, Chia-ling Wu
doaj   +1 more source

A manufacturable achromatic fresnel lens for CPV [PDF]

open access: yes2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC), 2016
The CPV industry has moved to very high concentration ratios (1000X or more) but the commonly used Fresnel lenses are limited to concentration ratios closer to 200X by chromatic aberration, leading manufacturers to turn to secondary optical elements, which increase cost and complexity.
Askins, Stephen Alex   +6 more
openaire   +2 more sources

Fresnel Interferometric Imager: ground-based prototype

open access: yes, 2009
The Fresnel Interferometric Imager is a space-based astronomical telescope project yielding milli-arc second angular resolution and high contrast images with loose manufacturing constraints.
Baez   +15 more
core   +1 more source

All-optical atom surface traps implemented with one-dimensional planar diffractive microstructures [PDF]

open access: yes, 2006
We characterize the loading, containment and optical properties of all-optical atom traps implemented by diffractive focusing with one-dimensional (1D) microstructures milled on gold films.
H. J. Lezec   +3 more
core   +2 more sources

3D printed dielectric Fresnel lens [PDF]

open access: yes2016 10th European Conference on Antennas and Propagation (EuCAP), 2016
This paper presents the design and fabrication of a zone plate Fresnel lens. 3D Printing is used for rapid prototyping this low-cost and light-weight lens to operate at 10 GHz. This lens is comprised of four different 3D printed dielectric zones to form phase compensation in a Fresnel lens.
openaire   +1 more source

Analysis and interpretation of the Seidel aberration coefficients in digital holography [PDF]

open access: yes, 2011
Peer reviewedPublisher ...
Champagne   +10 more
core   +1 more source

Ejection Characteristics and Drop Modulation of Acoustic Inkjet Printing Using Fresnel Lens

open access: yesJournal of Fluid Science and Technology, 2009
Acoustic Inkjet Printing uses an acoustic beam focused on a free liquid surface for drop ejection. This method can eject small drops without precise nozzle fabrication in comparison with thermal inkjet and piezoelectric inkjet.
Toshinobu HAMAZAKI, Naoki MORITA
doaj   +1 more source

High resolution imaging with Fresnel interferometric arrays: suitability for exoplanet detection [PDF]

open access: yes, 2005
We propose a new kind of interferometric array that yields images of high dynamic range and large field. The numerous individual apertures in this array form a pattern related to a Fresnel zone plate. This array can be used for astrophysical imaging over
Aime   +10 more
core   +1 more source

The use of convex lens as primary concentrator for multi-junction solar cells

open access: yesEmergent Scientist, 2018
A concentrator lens system was designed for a multi-junction solar cell, CDO-100-C3MJ, with an added feature − a convex lens was added above the Fresnel lens in order to improve the output power of the setup and reduce the need for the use of solar ...
Barrios Juan Paolo Lorenzo Gerardo   +6 more
doaj   +1 more source

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