激光与光电子学进展, 2014, 51 (7): 072201, 网络出版: 2014-06-27   

硅基液晶投影系统的LED光源照明系统设计 下载: 719次

Design of Illuminating System for Liquid Crystal on Silicon Projection System on LED Light Source
作者单位
1 长春理工大学光电工程学院, 吉林 长春 130022
2 吉林省光电测控仪器工程技术研究中心, 吉林 长春 130022
摘要
硅基液晶(LCOS)空间光调制器件的特点是反射光成像,要求照明光束发散角小,均匀性好。对此,设计了由抛物型反光碗、复眼透镜、偏振分光棱镜、聚光镜等组成的用于LCOS 的照明系统,对抛物反光碗以及复眼透镜各参数的设计原理做了详细分析,具体包括光源出射角度,光源的总体长度,所需均匀照亮的尺寸,抛物反光碗各参数对出射角度的影响,其实现原理主要包括复眼透镜匀光理论。设计要求光源出射角度小于10°,总体长度为220 mm,均匀照明面积为20 mm×20 mm,最后给出聚光透镜组的设计结果,使光线聚焦到LCOS 表面,照度值要达到0.35 lx/m2,其不均匀度在15%以内。进一步使用Lighttools 软件,对其进行仿真,由照度曲线图和照度栅格图可知,设计结果满足设计要求。
Abstract
It is liquid crystal on silicon (LCOS) micro- projector′s characteristic that an image is formed by the reflected light from the LCOS′ surface, and the illuminating beam angle of divergence needs to be small, the uniformity error of illuminating should be fairly well. According to these requirements, an illuminating system on LCOS is designed, the projection device consists of a parabolic reflector, fly′ s- eye lens, a polarizing beam splitter, condenser lens and so on. The parameters of the parabolic reflector and the fly′s-eye lens are analyzed in detail. It includes the beam angle of divergence, the total length for the light source and the intended square to be uniform illuminated. Based on the theory of fly′ s eye′ s inform illuminating and the relationship between parameters of the parabolic reflector and the beam angle of divergence. The design requirements are that the beam angle of divergence should be smaller than 10°, the total length of the light source should be 220 mm, the area to be illuminated is 20 mm × 20 mm. Finally collimating lens is designed to collimate the rays on the LCOS, the illuminance should be as large as 0.35 lx/m2. And it is demanded that the uniformity error on the surface of LCOS should be limited in 15% . Simulation results are acheived by Lighttools. Based on the line charts and the grid charts, it has satisfied the design requirements.

赵斌, 张国玉, 陈启梦, 张健, 王国名. 硅基液晶投影系统的LED光源照明系统设计[J]. 激光与光电子学进展, 2014, 51(7): 072201. Zhao Bin, Zhang Guoyu, Chen Qimeng, Zhang Jian, Wang Guoming. Design of Illuminating System for Liquid Crystal on Silicon Projection System on LED Light Source[J]. Laser & Optoelectronics Progress, 2014, 51(7): 072201.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!