由於光纖插入微流體晶片時，光纖發出之光束會呈現發散現象，因此本論文藉由微機電製程技術於微流體晶片上製作一光束準直液態透鏡，藉由此液態微透鏡，使得光束準直且能量集中，減少能量消散。
本研究首先藉由幾何光學基礎理論設計此光準直液態透鏡，並運用光學模擬軟體模擬其理論並用實驗驗證其正確性。本文分為兩種設計方式，第一種方式固定光纖與透鏡圓心之距離改變透鏡曲率半徑，第二種方式固定透鏡曲率半徑改變光纖與透鏡圓心之距離。
透過幾何光學理論設計適當的透鏡曲率半徑和訂定光纖與透鏡的距離，可得光束準直的效果，最後顯示實驗與模擬分析結果趨勢相同。

We design liquid microlens for collimating light in microfluidic systems. The microlens reduce losses in light intensity due to dispersing of light out of optical fibers.
The liquid microlens is designed based on the principle of geometrical optics. We use experiments and the ray-tracing optical simulations to verify the accuracy of this approach. Two different designs are proposed: (1) fix the distance which is from the fiber to center of the lens, and then change the radius of curvature, and (2) fix the radius of curvature, and then change the distance which is from the fiber to the center of the lens.
Through suitable choices of parameters for both cases (1) and (2) based on the geometrical optics principle, we can obtain collimating light. The results shows that the experimental data are qualitatively in agreement with the simulation result.

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