Application and Practical significance of Fresnel Lens in Lamights
菲涅尔透镜在车灯的应用及现实意义

摘要

目前，中国车用灯光科技的发展已经十分快速。同时由于在汽车领域的迅速发展和市场竞争的激烈，现代车辆照明系统对发光效果、安全特性和美观性能的需求也愈来愈高。因此车辆灯具中自由曲面反射装置和LED灯光控制系统的设计与加工十分关键。这与传统光学系统的设计方式有所不同。汽车灯光控制系统的非成像光学设计也是一个学科、重复的设计步骤。和传统抛物面镜与配光透镜的结合方式一样，通过自由曲面和菲涅尔原理与镜片的结合，能够同时完成辐合和配光的功能，也因此后雾灯设计能够有效节约使用的空间，降低安装成本。因此，本文分析了菲涅尔透镜在基于菲涅尔透镜的LED汽车后雾灯设计中的应用的现实意义。

Abstract

At present, the development of Chinese car lighting technology has been very fast. At the same time, due to the rapid development in the automotive field and the fierce market competition, the demand of modern vehicle lighting system for luminous effect, safety characteristics and aesthetic performance is also becoming more and more high. Therefore, the design and processing of free surface reflector device and LED light control system in vehicle lamps is very critical. This is different from the design of traditional optical systems. The non-imaging optical design of the automotive light control system is also a disciplinary, repetitive design step. Like the traditional combination of parabolic mirror and light distribution lens, the combination of free surface and Fresnel principle and the lens can complete the function of convergence and light distribution at the same time, so the design of the rear fog lamp can effectively save the space for use and reduce the installation cost. Therefore, this paper analyzes the practical significance of the application of Fresnel lens in the design of LED vehicles based on Fresnel lens.