太陽能光電產業因應環保議題而蓬勃發展，利用太陽光充足而具有龐大幅射能量的優勢下產生了兩種主流的應用模式─以蒐集太陽輻射能經由光電轉換並儲存的成電能的太陽能電池；直接利用太陽輻射的熱能或者光能，並將熱能或光能傳遞到應用的場合。後者傳遞光能的應用方法具有能量轉換上的優勢，在這個利基之下，我們提出利用非成像光學設計蒐集太陽光的元件，用來傳遞太陽光取代部分日間照明用電。
為使蒐集能量能集中傳遞至出口並考慮不同照明強度需求而必須做的模組堆疊，本文提出了以”扇形平板導光元件配合微結構面”的方式將太陽光可見光部分能量集中傳導至側端輸出。先定義出希望收集的太陽入射角度，經過計算光學材料的全反射角與各方向的入射條件，能減少傳遞過程中的多次折射及介面損耗能使集光元件的效能達顯著成長，在100,000 LUX的直射日照下，厚度30.65mm的集光器出口端光通量為1362.52 lm，相較原本 Natural light illumination system (NLIS)導光磚出口端光通量為179.44 lm，收集的光通量為原本的7.59倍，在相同面積條件所能收集的光通量提高2.61倍，同時考慮集光器出口數目的減少和出口端面積，集光比是NLIS導光磚的9.1倍，並且在集光器堆疊和模組化後得到更高的集光比。

Applying solar energy, natural light illumination system (NLIS) is a low pollution and low energy consumption system. We divide the light transmission process into solar collecting, light transmitting and light emitting for indoor illumination. However, the efficiency of previous static solar collector is about 6%. The energy is difficult to meet the increased demand. In the first section, we review the basic concept of non-imaging optics and how we use the material Polymethylmethacrylate (PMMA) and geometry to design the input area and output optical properties. Subsequently, we verify the beam conversion, luminous flux and luminous intensity by optical simulation software, FRED. We also identify the relation between efficiency and thickness. The energy conversion efficiency under the same area-conditions is 2.61 times. The luminous intensity is distributed in the plus or minus 20 degrees. The light collecting devices can be improved and applied to indoor lighting.

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