本論文針對近幾年內有關LED路燈光學設計的文獻，進行搜集、整理、分析以及比較，並參考其光學設計之方法。
傳統的路燈高度依照燈具型式、排列方式、燈杆種類以及使用地區的不同，高度從5公尺到10公尺都有，在此高度下，若是發生損壞、故障的情況，則維修相當不容易，且在維修的途中也存在一定的風險。本研究特別提出一種新型LED道路照明燈具—「矮路燈」，顧名思義「矮路燈」即是高度不高的路燈，由於高度不高，因此維修、保養相當容易；此外，本研究亦針對「矮路燈」進行初步模擬，以期望能夠達到與傳統路燈相同的照明效果。

This study first conducts a literature review on the optical designs for LED street lighting in order to propose a novel optical design. It is found that the height of traditional street lighting ranges from 5 m to 10 m, for various luminaire types, arrangements, kinds of lampposts, and locations. At this height, it is difficult to repair a breakdown, and risks exist during repairs. This study proposes a novel design of LED lighting fixture – low street lighting, which is installed close to the ground, and thus is easier to maintain and repair. The proposed low street lighting can achieve the same luminance performance as traditional street lighting.

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