Installation method for Fresnel Lens and secondary optical element in solar energy assembly

The invention discloses an installation method for a Fresnel lens and a secondary optical element in a solar energy assembly. Both of the upper surface and the lower surface of the secondary optical element in the installation method are square, and the remaining four side faces are isosceles trapezoid hexahedrons. The upper surface and the lower surface of the secondary optical element are parallel. The upper surface of the secondary optical element is installed in front of the focal point of the Fresnel lens. The upper surface of the secondary optical element is parallel to the lens face of the Fresnel lens. The centers of the upper surface and the lower surface of the secondary optical element are on the same line with the center of the lens face of the Fresnel lens. The four corners of the upper surface of the secondary optical element are aligned with the four corners of the Fresnel lens and then the secondary optical element is rotated along the symmetric axis of the secondary optical element for 10-50 degrees. Through adjustment of the installation position and the installation angle between the secondary optical element and the Fresnel lens, the installation method improves the output power of an assembly system in the solar energy assembly significantly.