摘要
根据非成像光学理论,提出了一种基于准直系统的自由曲面设计方法。以几何光学为理论基础,设计了一种关于中心轴旋转对称的新型发光二极管(LED)准直系统。准直系统的集光角约为236°,出射光半发光角度小于1°。基于几何光学和能量守恒定律,在准直系统的出射平面上设计了自由曲面,并给出了"多对一"的能量拓扑关系和均匀矩形光斑的照明设计方法。借助Matlab软件,对自由曲面的面型数据进行求解,并在曲线曲面的非均匀有理B样条(NURBS)曲面的理论基础上,采用SolidWorks软件搭建模型,并通过光学设计软件LightTools进行模拟分析。仿真结果表明:新型准直系统能够实现大角度光线的准直,基于准直系统的自由曲面设计方法实现了均匀的矩形光斑。
According to the non-imaging optics theory,a freeform surface design method based on collimation system is proposed.With the geometrical optics as the theoretical foundation,a new type of light-emitting diode（LED）collimation system is designed based on the rotational symmetry of the central axis.The light collecting angle of the collimating system is about 236°,and the semi-luminous angle of the emitted light is less than 1°.Based on geometrical optics and the law of energy conservation,a freeform surface is designed on the exit plane of the collimating system.The‘many-to-one＇topological relation of energy and the illumination design method of uniform rectangular spot are presented.The surface data of freeform surface is solved by Matlab software.The model of this surface is built on the basis of non-uniform rational B-splines（NURBS）surface theory by SolidWorks software.Simulation analysis is carried out by LightTools software of optical design.The simulation results show that the new collimating system can collimate the light of large angle,and the design method of the freeform surface based on the collimating system can achieve uniform light spot of rectangle.
作者
朱民
楼俊
潘玉珏
谢成宝
Zhu Min;Lou Jun;Pan Yujue;Xie Chengbao(College of Optical and Electronic Technology, China Jiliang University, Hangzhou, Zhejiang 310018, China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2018年第4期292-297,共6页
Acta Optica Sinica
基金
浙江省自然科学基金(LY18F050008)
关键词
光学设计
非成像光学
自由曲面
发光二极管准直系统
optical design
non-imaging optics
freeform surface
light-emitting diode collimating system
