在本論文中利用光學分析軟體TracePro與3D模型建構軟體SolidWorks來作為輔助設計LED光學模擬的工具，利用軟體去模擬LED與透鏡結合，探討整個光萃取率是否有達到改善。所以本實驗將分成兩部份作為探討的重點。第一部份先利用光學模擬軟體建立LED及透鏡相關參數資料，.進而進行LED有無透鏡光學模擬，從模擬結果得知使用Silicone透鏡比SiO2透鏡來的好，這是因為Silicone (n=1.41)較SiO2折射率(n=1.46)來的小，在光通量值方面Silicone透鏡的模擬值為27.581lm ，而SiO2透鏡的模擬值為27.049lm 。所以Silicone透鏡較佳。在第二部份為了驗證光學模擬結果，所以將SiO2透鏡和LED封裝製作成實際元件，將兩者模擬與結果做一個相對比較，與光學模擬的趨勢一致，所以證明加上透鏡，對於光萃取有極大幫助。另外再針對Fresnel lens去做模擬，以便尋找最佳光取出的趨勢。

In this paper, we use optical analysis software TracePro and 3D modeling software SolidWorks to simulate the combination of LED and lens to explore the entire light extraction efficiency. Therefore, this experiment will be divided into two parts. The first part is using optical simulation software to establish parameters of LED and lens-related information. And then proceed LED optical lens simulation, from the simulation results we can see that Silicone lens are better than the SiO2 lens, because refractive index (n = 1.41) of Silicone is less than refractive index (n = 1.46) of SiO2. The Luminous flux of Silicone lens is 27.581lm, and the simulation of SiO2 lenses lens is 27.049lm. In order to verify the second part of the optical simulation results, we will combine SiO2 Lens and LED into the actual components, comparing the simulation and the actual measurement results, we find that the simulation tendency is the same, so the simulation tendency is appropriate. It proves that it will make a great help of light extraction with lens. Another simulation for the Fresnel lens is to find out the trend of the best light extraction.

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