本論文主旨在探討發光二極體(LED)與光學透鏡(Optical Lens)之二次光學設計，應用在路燈照明模組，用二次光學透鏡之設計來提高道路照明品質，達到所需之道路光形。首先由單一封裝的LED與一顆光學透鏡去做二次配光，改變LED光源初始的Lambertian分布，用3D繪圖模擬軟體SolidWorks建構透鏡模型，並且設計透鏡之最佳參數，再以光學模擬軟體TracePro模擬單顆組合之配光曲線。接著建構LED路燈模組，組成一60W路燈模組，以光學模擬軟體TracePro獲得該路燈模組之最佳配光曲線。並且模擬與實作的LED路燈之配光曲線皆符合經濟部能源局所訂定之燈具配光特性。最後利用DIALux建立道路環境，並針對實作路燈之配光進行照度模擬，分析道路的平均照度、平均輝度、眩光等等。本論文研究之結果，對照國際照明委員會(CIE)標準，可提供LED路燈應用於次要道路照明上。

This study is concerned with the secondary optical design of the LED and optical lens used in streetlight. The purpose is designing the secondary optical lens to improve the quality of illumination. First, set a single LED in optical simulation software, and the module of lens can be constructed by 3D software Solidworks. The next step is trying to find the optimum parameters of the optical lens.
We simulated the structure composed of a single LED and an optical lens using the software TracePro. By changing the initial Lambertian distribution, the patterns that we needed can be obtained. Then, a 60W LED streetlight module composed of several LEDs and lenses can be constructed and simulated by software TracePro. The best distribution curve can then be received. The implemented and simulated Luminous Intensity Distribution Curves of the LED streetlight conform to the lamp characteristics of Bureau of Energy.
Finally, the simulation software DIALux can be used to establish a road environment and analyze average illumination, average luminance, glare and so on for implementing streetlight. According to the standards of CIE (The International Commission on Illumination), the results of this research can be applied to streetlight on secondary roads.

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