發(fā)布時間：2018-01-18 06:24

  本文關鍵詞：基于tracepro的LED二次配光設計　出處：《湖北大學》2014年碩士論文　論文類型：學位論文

  更多相關文章： 非成像光學 自由曲面 LED透鏡

【摘要】：以LED照明為代表的半導體照明,經歷了大概40年的迅速發(fā)展,至今已經進入高速發(fā)展時期,具有很多傳統(tǒng)光源不具備的優(yōu)點,被認為是21世紀最具有應用價值的新型光源,正愈來愈多地應用于背光、投影顯示、室內外照明和新能源等諸多領域。 本文介紹了非成像光學的發(fā)展進程,以及非成像光學在照明系統(tǒng)的應用概況。本文詳細討論了非成像光學中的能量收集率,光學擴展量,拉格朗日不變量在照明光學系統(tǒng)中的概念以及面間能量最大率與光學擴展量,拉格朗日不變量之間的關系,為后面自由曲面的設計的算法奠定理論基礎。 同時本文對LED的配光器件進行分類,并詳細的闡述了各個配光器件的性質,給出各個配光器件的母線方程；結合圓形和矩形光斑復合拋物面聚光器的設計實例,介紹了光學仿真軟件Tracepro的使用。 為了實現均勻的照明光斑分布,需要設計各個角度光斑均勻分布的透鏡,概述了一般自由透鏡的設計方法并對各個方法的優(yōu)缺點進行討論,本文采取直接法設計旋轉對稱的自由曲面的LED透鏡的基本思路,為了簡化計算,根據光源特性以及目標照明平面的光斑分布,采用光能計算結合邊緣光線理論的設計方法,將二階非線性方程簡化成一階擬線性偏微分方程,大大降低了求解難度。基于該方法設計了設計產生一個120°×60°的均勻矩形光斑透鏡,tracepro仿真結果可以看出光斑為矩形,邊緣光滑,光照均勻,光線接收率大于85%。
[Abstract]:Semiconductor lighting, represented by LED lighting, has experienced about 40 years of rapid development, and has entered a period of rapid development, which has many advantages that traditional light sources do not have. In 21th century, it is considered to be the most valuable new light source, which is more and more used in many fields, such as backlight, projection display, indoor and outdoor lighting and new energy sources. In this paper, the development of non-imaging optics and the application of non-imaging optics in lighting systems are introduced. The energy collection rate and optical spread in non-imaging optics are discussed in detail. The concept of Lagrange invariant in illuminating optical system and the relationship between the maximum energy rate and optical extension and Lagrange invariants lay a theoretical foundation for the design algorithm of the following free-form surface. At the same time, the light distribution devices of LED are classified, and the properties of each light distribution device are described in detail, and the generatrix equation of each light distribution device is given. The application of optical simulation software Tracepro is introduced in combination with the design examples of circular and rectangular optical spot composite parabolic concentrators. In order to realize the uniform distribution of illumination spot, it is necessary to design the lens with uniform distribution of light spots at all angles. The design method of general free lens is summarized and the advantages and disadvantages of each method are discussed. In this paper, we adopt the direct method to design the LED lens of rotation-symmetric free-form surface. In order to simplify the calculation, according to the characteristics of the light source and the spot distribution of the target illumination plane. The second order nonlinear equation is simplified into a first order quasilinear partial differential equation by using the design method of light energy calculation and edge ray theory. Based on this method, a 120 擄脳 60 擄uniform rectangular speckle lens is designed. The simulation results show that the spot is rectangular and the edge is smooth. The light is uniform and the receiving rate of light is more than 85.
【學位授予單位】：湖北大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM923.34

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