Fresnel lens assembly for photovoltaic cell sheet/roll-up structure, has lens placed above band of photovoltaic cells by network of transparent tubes that are flexible under pressure and rigidified when supplied with pressurized gas

摘要

The assembly has lenses that are placed above a band (2) of photovoltaic cells by a network of transparent tubes that are flexible under pressure. The tubes are rigidified when supplied with pressurized gas, e.g. nitrogen, using an air compressor. The tubes can be folded in the absence of pressurized gas. The assembly covers rigid thin plates (3) that are separated by a rectilinear tube (4) and connected to curved tubes (5).