太陽模擬器為車輛性能試驗研究提供固定、標準的光環境，免于室外環境時空變化的影響。針對具有平行度的太陽模擬器結構復雜、成本高的問題，基于光的透射原理制作出一套簡易有效的太陽平行光模擬器。 經過比較，選擇氙燈作為光源，用凸透鏡制作平行光源方案。簡易太陽模擬器包括以下部分：光源及電路配件（變壓器、觸發器、高壓線、燈支架）；光學配件（透鏡及燈杯）；同步“U”形支撐架（同時聯接傳感器和太陽模擬器）。經SPSS 分析，實驗結果表明不同高度、不同位置下，擋片的投影面積大小沒有明顯差異，證明系統在透鏡面積大小輸出范圍里面，平行性能滿足要求。另外，有擋片與無擋片之間的能量存在明顯差異，證明直射能量遠遠大于試驗環境中散射的能量。
關鍵詞： 太陽模擬器 氙燈 凸透鏡 直射

Abstract： Solar simulator provides plant experiment and research fixed and standard light environment avoiding space and climate change effect. For solving problems of complication and high cost by solar simulator with certain parallel degree, a simple but effective solar simulator was built with xenon lamp and convex selected. Lamp with circuit fittings such as transformer, trigger, high voltage line and frame and optical fittings such as convex and lamp cup are included in the simulator. After analysis by SPSS, there is no apparent difference among shadow areas in different heights and positions, which shows that the parallel degree is satisfied within convex area. Additionally, there is here is extreme difference between no leaf and having leaf conditions, which shows that direct radiation is so far bigger than diffuse radiation.
Key words：Solar simulator, xenon lamp, convex, direct radiation