在本論文中,我們利用中場擬合法建立出一精準之集成式封裝LED光源模型,並藉由此模型,設計出一可應用於路燈模組上,具有高效率且寬散角分布之非球面透鏡,而照明面積符合北美照明協會規定之中分佈。最後,製作一樣品透鏡進行驗證與分析。 In this thesis, we construct a precise cluster LED optical model verified by normalized cross correlation in mid-field. Based on this optical model, we design a high efficiency lens which performs wide divergent-angle distribution. The lens can be applied in luminaires for roadway lighting and its emitted target area fits in with medium distribution of IESNA roadway lighting standard. Finally, we mock up the lens for verification, and then we analyze the reliability of the luminaire.