LED汽車晝行燈的照明設計與雛型實測

Lighting Design and Prototype Measurement for LED Vehicle Daytime Running Light

劉源昌(Yuan-Chang Liou) ； 陳世寬(Shin-Kuan Chen) ； 賴岦俊(Li-Chun Lai) ； 謝育展(Yu-Jhan Sie)

《科儀新知》 187期 (2012/04) Pp. 86-96

https://doi.org/10.29662/IT.201204.0009

摘要

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。

並列摘要

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 reflector 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 reflector. The prototype is manufactured for the reflector 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 reflector is proven to be practical.