現今，很多的研究者都在試著設計一個系統去達到將太陽光作為室內照明，因為太陽光系統有很多的優點，一個簡單的拋物面反射罩常常使用來收集太陽光，但是它有一個很大的問題，就是當太陽光非直射入拋物面反射罩時，收集到的太陽光並不會聚集到焦點，而是有一偏移量，所以一個精確的偵測太陽方向的機器必須使用，為了去改善這個問題，我們提出一個加上導光管的太陽光集光器，它包含了一個拋物面反射罩及一個反射式的中空導光管，我們提供一個太陽光集光器的數學模型，結合了光在導光管的反射次數及光經過拋物面反射罩反射後的配光曲線來得到太陽光集光器的效率，除此之外，使用楔形導光管來取代矩形導光管來改善整體的公差，最後使用TracePro這套光學模擬軟體來模擬及驗證這個架構的可行性，最後得到的結果，這個包含導光管的太陽光集光器確實可以擁有不錯的效率及改善公差的問題。

Recently, many researchers have tried to design a system for indoor illumination because the benefits of solar systems. A simple parabolic reflector is often used to collect sunlight but the efficiency is poor when sunlight isn’t incident normally. Therefore, an accurate machine to track sun has to be used. In order to get better tolerance, a light pipe based solar concentrator (LPBSC) which comprises a parabolic reflector and a hollow reflective light pipe is proposed. We develop a math model which combines the reflection times of sunlight in light pipe and the candela data of parabolic reflector to analyze the efficiency. And then, straight light pipe is replaced by tapered light pipe to improve the tolerance. Optical simulation software, TracePro, and mathematical software, MATLAB, are used to prove the model is correct and feasible. In the results, LPBSC can improve the tolerance to get good efficiency.

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