LED二次配光透镜设计

发布时间：2018-08-06 16:27

【摘要】：在当今能源紧缺,环境污染的严峻形势下,新一代照明光源LED(发光二极管,Light Emitting Diode)以其独特的优势,在各个行业均得到了广泛应用。然而,如何对LED进行高效的配光设计,以满足各个应用领域对照明灯具的要求,成为目前LED照明领域亟待解决的重大课题。为了实现LED照明系统的高效率、小型化,需要针对LED光源进行二次配光设计。本课题是在非成像光学与自由曲面理论基础上,针对大尺寸以及RGBW全彩LED光源的光学系统设计进行研究。具体研究内容如下:研究自由曲面面型的设计方法,基于边缘光线理论、能量守恒定律和几何光学基本定律,采用计算过程和编程简单的ODE(Ordinary Differential Equation)法,设计了一款照度均匀的平凸透镜;采用几何求解法,设计了一款全内反射准直透镜;基于试错法,设计了手电筒变焦透镜和非对称洗墙灯透镜。针对大尺寸LED光源的变焦透镜,将ODE自由曲面法和试错法相结合,设计了一款用于舞台灯照明的变焦透镜组,实现了聚光和泛光状态都均匀的照明效果;在现有手电筒结构基础上,用全内反射(TIR)结构,成功设计了一款远射程的手电筒变焦透镜。针对RGBW全彩LED光源的舞台灯照明,为了解决光束角单一和操作困难的缺陷,提出一种由调焦片和TIR透镜组合的变焦透镜系统。并针对RGBW光源用于舞台灯照明时混光差和光斑不均匀的现象,提出了一种非规则六边形复眼透镜阵列结构。为了解决洗墙灯的远照射距离和高均匀度不能同时兼顾的难题,提出了非对称透镜结构。针对洗墙灯照明时容易出现的光斑分层和黄斑现象,提出了一种新型匀光结构。成功设计出一款光斑均匀、投射距离远的洗墙灯透镜。所有设计的产品都开模并测试,实际的测试效果与软件仿真结果基本吻合,验证了所提出方案的准确性与可行性。
[Abstract]:Under the severe situation of energy shortage and environmental pollution, LED (Light emitting Diode), a new generation of lighting light source, has been widely used in various industries because of its unique advantages. However, how to design highly efficient light distribution for LED to meet the requirements of lighting in various application fields has become an important task to be solved in the field of LED lighting. In order to realize the high efficiency and miniaturization of LED lighting system, it is necessary to design the secondary light distribution for LED light source. Based on the theory of non-imaging optics and free-form surface, the optical system design of large size and RGBW full-color LED light source is studied in this paper. The main contents are as follows: the design method of free-form surface is studied. Based on the theory of edge ray, the law of conservation of energy and the fundamental law of geometry optics, the ODE (Ordinary Differential Equation) method of simple calculation and programming is adopted. A flat convex lens with uniform illumination is designed, a total internal reflection collimation lens is designed by geometric solution, and a flashlight zoom lens and an asymmetric wall light lens are designed based on trial and error method. Aiming at the zoom lens of large size LED light source, a zoom lens group for stage lamp illumination is designed by combining ODE free-form surface method with trial and error method. Based on the existing flashlight structure and total internal reflection (TIR) structure, a long range zoom lens of flashlight is successfully designed. In order to solve the problems of single beam angle and difficult operation, a zoom lens system is proposed for the stage lamp illumination of RGBW full-color LED light source, which is composed of a focusing plate and a TIR lens. An irregular hexagonal compound lens array structure is proposed to solve the problem of mismatch and uneven spot when RGBW light source is used for stage lamp illumination. In order to solve the problem that the long irradiating distance and high uniformity of wall-washing lamp can not be taken into account simultaneously, an asymmetric lens structure is proposed. In this paper, a new uniform light structure is proposed to deal with the phenomenon of lamina delamination and macula. Successfully designed a uniform spot, projection distance away from the wall lamp lens. All the designed products are open and tested, and the actual test results are in good agreement with the simulation results of the software, which verifies the accuracy and feasibility of the proposed scheme.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM923.34

【参考文献】