本文目的是探討各種光束分布角度不同的 LED 應用於 ECE R87 汽車晝行燈的照明設計與雛型配光實測比較，分別使用 direct emission 與非對稱反射面的設計方式，並藉由ASAP光學設計分析軟體來模擬配光，模擬結果顯示 direct emission 方式僅適合光束分布角度小 (視角 20－30 度) 的 LED，而反射面設計方式可適合各種光束分布角度的 LED。雛型方面，選取 Cree-XPC LED 搭配反射面來製作鋁模，經配光實測證實與設計結果近似，而且僅需 1 顆市售 Cree-XPC LED (最低流明數需求 80 lm、耗電量僅需1 瓦)，即可符合 ECE R87 的配光規範，可見非對稱反射面設計方式之實用性。

The lighting design and the prototype light pattern measurement for ECE R87 vehicle daytime running light with the different LED is studied in this paper. The design methods by the direct emission and the asymmetric refl ector are adopted for the optical design, respectively; while, the ASAP software is used for the light pattern simulation and analysis. The results show that the design method is only suitable for small angle LED by the direct emission while it works for all kind of LED by the asymmetric refl ector. The prototype is manufactured for the refl ector with the Cree-xpc LED and its light pattern measurement is similar to the simulation results. Since only one LED, minimum value 80 lm and 1 watt, is needed to pass the ECE R87 regulation, that the design method by the the asymmetric refl ector is proven to be practical.