近年來，人們環保意識抬頭，綠能產業在全世界越來越備受重視，特別是在建築業，許多人為了節約能源與想要製造出對人體生、心理有益之健康照明與情境照明，熱切渴望設計出能將自然光導引入室內做為室內照明使用之產品，稱為【自然光照明系統】，此系統雖可有效運作，將太陽光導引入室內，但光纖出口端的光線分布雜亂，光線利用率不高，難以讓室內照明有均勻之效果。為了解決此問題，在此篇論文中我們設計一光學耦合傳光裝置，搭配本實驗室所研發設計之直角稜鏡集光模組，分析其光線輸出入關係式與太陽光入射此堆疊結構在輸出端之效率，發現此論文提出之結構其輸出效率較原堆疊稜鏡靜態式太陽能集光器高出47.61%之多。考量到光纖成本因子，我們定義一KPI－輸出光通量與截面積之比值，更可發現其數值為原始結構之5.89倍。在其能量轉換效率提高，配光曲線與原始結構比具傳光優勢，並大幅降低光纖數量、節省成本，我們可說這一光學耦合傳光裝置確實有達到我們預期的主要設計的。

Currently, energy-saving and carbon dioxide reduction are the most critical issues faced by the globe. Therefore, solar energy should be used as much as possible. A possible use is to illuminate a solar cell so as to transform light energy directly into electricity. However, due to its low efficiency and high cost, the solar cell is not presently economically feasible. Utilization of solar energy, which is considered one of the most important renewable energy sources, not only reduces consumption of fossil fuel but also slows down the pace of global warming. In addition to the use of solar cells, daylight illumination is also an important access to solar energy. Our team has designed a product that can guide the natural light to the interior for indoor illumination. It is called the “Natural Light Illumiantion System.” Our system can guide sunlight to the interior, but the distribution of light at the exit of the system is disordered. To solve this problem, we have proposed an optical coupling transmission structure with right-angled prism collecting modules. We analyzed the mathematical mode of coupling transmission. And, we also analyzed the efficiency of this cascade structure at the exit surface of the concentrator. In this paper, we provide a high efficiency new concentrator coupled to a transmission device. We save 75% of the optical fiber cable expense usage and we improve efficiency by47.46% when we add an optical coupling transmission structure to our static lighting concentrator. It is batter than the original cascade prism static concentrator. Taking the fiber cost into consideration, we defined a KPI (Key Performance Index) – It mean a ratio of luminous flux on an illuminated area. Our system can provide more powerful light for indoor illumination than the original module. The optical coupling can provide high transmission efficiency and provide parallel light beams at the export from the optical coupling module. We used optical simulation tools to design and simulate the efficiency of the active module. This system will provide a great number of benefits for the people who use it.

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