Fresnel透鏡作為一種聚光器，被廣泛應用於太陽能發電系統中，透過將太陽光折射的方式聚到太陽能電池片，但由於太陽會不斷移動，而太陽光線入射角度的改變會影響Fresnel透鏡所聚集的光斑位置和形狀，進而影響太陽能發電效率，本論文中光學計算鏡是以Fresnel透鏡原理所製作而成，以此來作為聚光器。 本論文主要目的是探討光學計算鏡聚焦後光斑與太陽夾角之關係，並分析其對太陽能電池片的發電效率影響。使用Tracepro光線追蹤軟體進行模擬實驗，建立太陽光光源、太陽能電池片模型，以曲率50mm，焦距160mm的Fresnel透鏡，找出光學計算鏡與太陽能電池片放置的最佳距離為30mm，配合調整太陽光光源之角度，得到最合適的光斑寬度為50mm×500mm。 實驗結果，使用Fresnel透鏡時，考慮全年光斑偏移變量並加以修正，可有效提高能量利用率大於1.5倍。 ;As a concentrator, the Fresnel lenses are widely used in solar power systems to oncentrate sunlight onto solar cells by refracting the sun. However, due to the continuous movement of the sun, changes in the angle of incidence of sunlight can affect the position and shape of the focused luminous spot created by the Fresnel lens, thereby impacting the efficiency of solar power efficiency.In this paper, an optical calculation mirror, based on the principle of the Fresnel lens, is developed and employed as a concentrator. The main objective of this paper is to investigate the relationship between the angle of incidence of focused the luminous spots produced by Fresnel lenses and the efficiency of solar cells. Simulation experiments are conducted using Tracepro ray tracing software, with the setup of a solar light source and a solar cell model. A Fresnel lens with a curvature of 50mm and a focal length of 160mm is utilized, and the optimal distance between the optical calculation mirror and the solar cell is determined to be 30mm. By adjusting the angle of the solar light source, the most suitable Luminous Spot size is obtained, measuring 50mm×500mm. The experimental results show that when considering the full-year variation of the spot offset and making appropriate corrections while using the Fresnel lens, the energy utilization efficiency can be effectively increased by more than 1.5 times.
