| 自由曲面LED汽车前照灯光学透镜设计方法 |
| |
| 引用本文： | 王洪,陈赞吉,吴衡,葛鹏.自由曲面LED汽车前照灯光学透镜设计方法[J].红外与激光工程,2014,43(5):1529-1534. |
| |
| 作者姓名： | 王洪 陈赞吉 吴衡 葛鹏 |
| |
| 作者单位： | 1.华南理工大学理学院广东省光电工程技术研究中心,广东 广州 510640 |
| |
| 基金项目： | 广东省重大科技专项计划(2009A080301013,2010A080402009);广州市重大科技专项计划(2010U1-D00221,2011Y5-00006);广东省战略性新型产业专项资金LED产业项目(2011A081301004,2012A080302003,2012A080304015) |
| |
| 摘 要： | 由于LED配光特性不同于传统光源，为了将LED 应用于汽车照明中需对LED 进行二次光学设计。文中根据LED 汽车前照灯的配光特性，提出了一种自由曲面LED 汽车前照灯光学透镜的设计方法。首先由能量守恒原理，在接收屏上的坐标和透镜自由曲面上的坐标之间建立能量的一一对应关系，基于非成像光学理论，采用照度优化设计法，运用数值计算求解出光学透镜曲面各个点坐标的坐标值，并使用三维模型软件制作出透镜光学模型。通过蒙特卡洛模拟法来追迹光线仿真，最后的配光效果完全满足《汽车用LED前照灯》（GB25991-2010）标准，系统的光学效率得到显著提高，可达到91%。
|
| 关 键 词： | LED 前照灯 数值计算 自由曲面 |
| 收稿时间： | 2013-09-10 |
Design method of LED headlamp freeform optical lens |
| |
| Affiliation: | 1.Engineering Research Center for Optoelectronics of Guangdong Province,School of Science,South China University of Technology,Guangzhou 510640,China |
| |
| Abstract: | Different from the light distribution characteristics of the traditional light source, LED light characteristics are more complex, the second optical design for LED used in automotive lighting needs to be done. According to the light distribution characteristics of LED automobile headlamp, a freeform optical lens design method for LED headlamp was presented in this paper. By establishing one-to-one relationship between the coordinates of point on the receiving surface and the coordinates of point on the freeform surface of lens according to energy conservation principle, determining the mapping relationship between the energy and the lens, and applying the illumination optimization method, the coordinates of point on the freeform surface of lens was solved out with numerical methods based on non-imaging optics theory, then modeling software was used to establish an optical model for the freeform optical lens. Through tracing the light with Monte Carlo simulation method, the final effect of light distribution fully meets the Automotive headlamps with LED light sources and/or LED modules (GB25991-2010) standards. The simulation results show that the optical efficiency is improved greatly and can be up to 91%. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载全文 |
|
