Non-imaging Fresnel lens used for HCPV power generation and design method of non-imaging Fresnel lens

The invention discloses a non-imaging Fresnel lens used for HCPV power generation and a design method of the non-imaging Fresnel lens, and belongs to the technical field of photovoltaic power generation. The design method comprises the following steps: dividing the lens into three areas for design in such a manner that light is focused by an SOG (silicon on glass) lens, and then emitted to a surface of an SOE prism, wherein according to the three different optical paths of the light focused by the SOG lens and then emitted to the SOE prism, namely a) focusing spots on the upper surface of the SOE prism; b) focusing spots right above the upper surface of the SOE prism; c) focusing spot below the upper surface of the SOE prism, so as to divide the SOG lens into three areas of the same area; then each area is appointed with a designed wavelength, and the optimal design of the focal length of each area is simulated with TracePro optical design software. As the partition design is taken out according to the spectral absorption of each junction battery body of a three-junction battery, the chromatism effect caused by a broadband spectrum can be reduced effectively, and the generating efficiency of a system is improved.