METHOD FOR PRODUCING A COMPOSITE CONCENTRATOR LENS PANEL FOR PHOTOVOLTAIC MODULES

摘要

The invention relates to solar energy, in particular, to solar radiation concentrators. The inventive method for producing a composite concentrator lens panel for photovoltaic modules by producing negative Fresnel lenses and by taking positive copies therefrom, consists in connecting negative Fresnel square-aperture lenses, manufactured by diamond turning, into an assembly by the end faces thereof, in producing an intermediate panel by filling the space between the assembly with negative Fresnel lenses and a silicate glass or a flexible sheet material placed above said assembly with two-component silicon and in polymerising said two-component silicon, in mechanically separating the intermediate panel from the assembly, in copying the intermediate panel on a polyurethane matrix by polymerising two-component polyurethane in the space between the intermediate panel and a flat sheet material, in separating the thus produced polyurethane matrix by bending it, in securing said polyurethane matrix on a solid base and in filling it with a two-component silicon compound, the thickness of which 0.1 mm or more greater than the depth of the Fresnel lens deeping into the polyurethane matrix, in placing the silicate glass above the silicon with a primer applied to the surface thereof, in pressing out the excessive silicon mixture to a thickness not less than 0.1 mm, in polymerising the mixture and in separating the glass with the lens panel from the polyurethane matrix by bending it.