NURBS函數創建複合自由曲面聚光透鏡之研製

Development of Condenser Lens with NURBS Function Compound Surface

蔡岳璋(Yue-Chang Tsai)

指導教授 ： 陳政順

國立臺北科技大學/機電學院/機電整合研究所/碩士(2012年)

摘要

本研究以幾何光學理論為基礎，利用NURBS函數之高自由度配合控制點之設計與安排創建複合式自由曲面透鏡，使LED光源有效的朝所預設之位置聚光，其聚光之位置及範圍皆可由所設計之自由曲面透鏡來進行控制。光學分析方面利用TracePro光學軟體進行光追跡與光斑檢視，在透鏡的製造上因其為複合式自由曲面故採用五軸加工技術進行模擬與銑削加工，透鏡材料的選用為聚甲基丙烯酸甲酯(PMMA)，因其具有極佳的光學特性，但需於加工後進行表面熱熔融處理以恢復透光性。

關鍵字

聚光透鏡 ； 複合自由曲面 ； 五軸加工

並列摘要

The purpose of this study is to develop a procedure for the design and manufacture of compound surface condenser lens with LED light source. The design of lens surface is based on the geometrical optics theory and the application of NURBS function for its high degree of freedom of control points. The Tracepro optical software was used to perform the optical analysis and simulation of ray tracing and spot view. The material selected for study was polymethyl methacrylate (PMMA) for its excellent optical properties. In the manufacture of prototype, the five-axis machining center was used to machine the complex free form surface and a thermal melting process was used to restore the optical transmission properties of the material. The case study showed that the developed procedure is feasible.

並列關鍵字

Condenser Lens ； Compound Surface ； Five-axis Machining

參考文獻

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[8] 梁宏彬，應用五軸加工機銑削球形曲面之探討，碩士論文，國立台北科技大學製造科技研究所，台北，2007。

[10] 黃繼輝，應用田口法於五軸CNC銑削加工製程之最佳化參數設計，碩士論文，國立台北科技大學製造科技研究所，台北，2008。

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