本論文提出一種新的光學薄膜結構為雙層微透鏡，利用熱熔法方式搭配CNC數值控制加工機與澆注PDMS翻模製程來製作，此光學薄膜具有高廣角接收的有效入射角度，故可以增加太陽光的吸收，即達到提升太陽能板之效率。然而，此雙層微透鏡光學薄膜包括第一與第二之透明材料層。第一是底層透明材料層有一個平面與弧面所組成的，其弧面座落於兩平面之相對位置上，第二是上層透明材料層則上表面具有複數個相互平行的微結構。經光學模擬軟體模擬入射角0°~85°分析結合穩健化分析出最佳尺寸，根據模擬結果得知雙層微透鏡光學薄膜是最好的，且雙層微透鏡比單層微透鏡或無雙層微透鏡陣列，對於總平均光照值與光吸收效率增益具有提升之優勢。最後，將此光學薄膜放置於太陽能板上來進行效能檢測，可以得到裝置雙層長圓柱狀微透鏡又比無裝置雙層長圓柱狀微透鏡光學薄膜下，太陽能板總光電流之增益約為12.58%且在側向光時，其增益值較大。此外，量測結果與模擬比較下，其結果有良好的一致性。

This thesis presents a new optical film with PDMS dual-layer microlens by using thermal reflow, CNC machining machine and PDMS replica process for an solar panel package is fabricated, by which method the receiving wide-angle incident light and the light absorption efficiency of a solar panel can be enhanced. The light-concentrating film includes a first and a second transparent material layers. The first transparent material layer has a flat surface and a cambered surface located at the opposite side of the flat surface. The second transparent material layer has an upper surface having a plurality of microstructures parallel with each other. The various parameters of the microlens are analyzed and characterized. The profile of the microlens was determined by using a commercial optical simulation software. Based on the simulated result, the optical film with the dual-layer microlens has the better total average illuminance value and the optical absorption efficiency than the single-layer microlens array and no dual-layer microlens. Finally, the films with microlens array are attached to an solar cell to measure their total photocurrent gain. The optical film with dual-layer microlens of the solar panel is total photocurrent gain of about 12.58%. In addition, the measured results are compared with simulated ones. They show good agreement with each other.

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