Results 41 to 50 of about 655,925 (308)
Secondary focusable and uniform convergence microprism in concentrating photovoltaic module [PDF]
E3S Web of Conferences, 2022 Low tracking accuracy of trackers, structure vibration by winds, and lens deformation by temperature lead to non-vertical incident irradiation of Fresnel lens, which necessitates a secondary concentrator in actual engineering application of concentrating
Guo Limin +5 more
doaj +1 more source
Achromatic Fresnel Lens with Improved Efficiency for PV Systems
International Journal of Photoenergy, 2014 This work is aimed to design and evaluate different achromatic Fresnel lens solutions capable of operating as concentrators aimed at photovoltaic cells systems. Throughout this study, the theoretical parametric design of the achromatic lens will be shown
Mario González Montes +4 more
doaj +1 more source
3D‐printed 4‐zone Ka‐band Fresnel lens: design, fabrication, and measurement
IET Microwaves, Antennas & Propagation, 2020 A planar and thin-grooved Fresnel lens is a great candidate for gain enhancement in millimetre wave communication, imaging systems, and wireless power transfer applications.
Kyoung Ho Jeong, N. Ghalichechian
semanticscholar +1 more source
Researches on the development of an optical system for improving the efficiency of photovoltaic panels [PDF]
E3S Web of Conferences, 2020 The paper aims to create a unit using Fresnel lenses. This module consist of an arrangement of planar-convex Fresnel lenses, made of methyl polymethacrylate, mounted in a hexagonal raster and bent to form a dome for collecting and amplifying solar ...
Rizescu Dana +2 more
doaj +1 more source
Frontiers in Energy Research, 2020 Solar desalination is a renewable energy-driven method that produces freshwater from saline/brackish water. Conventional solar desalination units are equipped with an inclined transparent condensing plate placed over a feedwater basin containing saline ...
Wing Sum Choong, Z. Ho, R. Bahar
semanticscholar +1 more source
Panoramic optical and near-infrared SETI instrument: prototype design and testing [PDF]
, 2018 The Pulsed All-sky Near-infrared Optical Search for ExtraTerrestrial Intelligence (PANOSETI) is an instrument program that aims to search for fast transient signals (nano-second to seconds) of artificial or astrophysical origin.
Antonio, Franklin +14 more
core +2 more sources
Design of Novel Compound Fresnel Lens for High-Performance Photovoltaic Concentrator
International Journal of Photoenergy, 2012 We present a new design of compound Fresnel-R concentrator which is composed of two lenses: a primary lens (Fresnel lens) that works by total internal reflection at outer sawteeth but refraction at inner sawteeth, and a ringed secondary lens that works ...
Lei Jing +6 more
doaj +1 more source
Fresnel reflections in inverse freeform lens design
Journal of the Optical Society of America A, 2022 In this paper we propose a method to design a freeform lens including the effect of Fresnel reflections on the transmitted intensity. This method is elaborated for a lens with one freeform surface shaping a far-field target from a point source or collimated input beam.
A. H. van Roosmalen +3 more
openaire +3 more sources
Debye representation of dispersive focused waves [PDF]
, 2006 We report on a matrix-based diffraction integral that evaluates the focal field of any diffraction-limited axisymmetric complex system. This diffraction formula is a generalization of the Debye integral applied to apertured focused beams, which may be ...
Amako +34 more
core +2 more sources
Daylighting System Based on Novel Design of Linear Fresnel lens
Buildings, 2017 In this paper, we present a design and optical simulation of a daylighting system using a novel design of linear Fresnel lens, which is constructed based on the conservation of optical path length and edge ray theorem. The linear Fresnel lens can achieve
Thanh Tuan Pham +2 more
doaj +1 more source