Fresnel lens

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  • noun

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lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length

References in periodicals archive ?
In this case, the family of Fresnel zones is based on ellipses [2], but as can be seen in the case of the Fresnel reflector which is shown in Figure 2, with the naked eye it is difficult to appreciate that the ellipses are indeed ellipses or circumferences.
In the case of a Fresnel reflector, it is known that at each plate zone, the central radial part provides the main contribution to the total reflected radiation (Figure 3), so from the point of view of the reflected signal, the position of the edge shape of each zone is not relevant because the edge is the zone part with the least contribution to the signal focusing.
Kandpal, Geometrical Designs and Performance Analysis of a Linear Fresnel Reflector Solar Concentrator with a Flat Horizontal Absorber.
There are four main types of concentrating solar power systems: parabolic troughs, dish/engine systems, central receiver systems and compact linear Fresnel reflectors.
Assess the emerging trends in CSP technologies - parabolic troughs, solar towers, parabolic dishes, Fresnel reflectors and energy storage.
This report is a detailed study of the current CSP market, with a project-by-project analysis that presents the strengths and weaknesses of CSPs four major technologies: parabolic trough, power tower, dish-engine, and linear Fresnel reflector.
But it was not easy for Reliance Power, the parent of Rajasthan Sun Technique, as it chose compact linear fresnel reflector (CLFR), a lesser-known technology option even in the CSP segment and also the fact that the France-headquartered technology provider had to close its business due to financial problems.
iii) Fresnel reflector based square dish (Arun) of all sizes (10 pages)
Ausra's Compact Linear Fresnel Reflector (CLFR) solar technology utilizes the heat from the sun's rays to create steam.
AREVA has begun operations of its molten salt energy storage demonstration plant designed specifically for use with the group s Compact Linear Fresnel Reflector (CLFR) technology.
The project is the world's largest CSP project based on Compact Linear Fresnel Reflector (CLFR) technology.
There are four types of CSP plants: (i) parabolic trough, (ii) compact linear Fresnel reflectors, (iii) dish Stirling (parabolic) and (iv) solar power tower.