Patent ID: 7580196

Claim:
A Liquid solar lens, from among Fresnel lenses formed by several transparent containers constructed by injection, blowing, extrusion, moulding, rotating casting or other glass, polycarbonate, methacrylate, in a construction with a reduced thickness and weight, comprising: Modules that are comprises as several containers that are identical in each zone, ring or crown by different from the modules composing the other zones, rings or crowns as regards their radius of curvature and the slope of the curvature of the upper and lower facets, with bi-convex configurations in the central modules of the lens, becoming plano-convex in the intermediate modules and finally concavo-convex in its end modules, with a transition of the radius of curvature of a lower facet, all of the modules non-deformable by the loads, said zones, rings or crowns being disposed on the same, plane with an outer convex curvature with a bow and all ridges or grooves minimised, a vertical face joining the upper and lower facets of the modules being flat and inclined towards the optical axis and, by the elimination of spherical aberration due to the incorporation in the modules of refracting fluids with different refraction index and very small volume.