以往在製作準直器時，每次需根據不同的光源與需求而設計，相當費時與沒有效率，對於非對稱式的光源，我們很難利用常見之光學元件設計方式達到準直的效果。因此，本論文提出以Basic程式語言撰寫自動化演算法可針對不同之光源設計具壓縮與準直光線功能之自由曲面透鏡，並使用光學模擬軟體FRED進行模擬與分析，接著以電漿燈光源為例，使用網格切割法分析光源。模擬結果顯示光源大小成功的由22.4公分×22.4公分被壓縮至1公分×1公分並將光線收斂成平行光，出光面的效率為43.07%，當光線傳遞至距準直器出光口1 km處時效率為42.11%，表示通過準直器後之光線具有相當高之準直度。
除了電漿燈光源，未來我們也可將此程式應用於PSSDL研發之自然光照明系統上，輸入不同的條件，程式就能自動建立準直器，可大幅節省設計的時間與提高精準度。

While fabricating the collimator, it needs to consider the type of light sources and various working conditions. It is obviously time wasting and not efficient. Besides, for the non-symmetric light source, it is hard to collimate light by traditional optical device. Hence, in this study, we propose an innovative numerical methodology of freeform lens that can compress and collimate light for different light sources. This numerical methodology features with automatic algorithm in fabrication simulation and is structurally processed by Basic language. We simulate and analyze the collimator with optical software named FRED. The LEP is used as light source in simulation, and Tessellation method is used for designing freeform lens. Results show that the light area can be successfully compressed from 22.4 cm×22.4 cm to 1 cm×1 cm, and the light is collimated to nearly parallel. The efficiency of the collimator reaches satisfying high values of 43.07% at the exit of collimator and 42.11% at 1 km away exit of collimator. In consequence, high collimation is obtained.
For further application, the proposed numerical methodology can also be extended to other light source like NLIS designed by PSSDL. While we input proper parameters, the program will automatically fabricate collimator, which can largely save time in designing process and improve precision.

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