微型投影论文：微型投影光学系统设计.doc

微型投影论文：微型投影光学系统设计【中文摘要】科技日新月异的今天,人们对投影机的要求不再局限于其功能,更注重其便携性和可操作性,使得微型投影机成为投影设备发展的主流方向,成为众多生产商家竞相投资的热点,都想在该领域占有一席之地。本文通过对投影元件性能的比较,选用LED作为微型投影的光源,选用LCOS芯片作为微显示面板,并对显示面板的照明方式进行了详细的阐述。本文在对投影系统光学特性参数计算的基础上,对投影物镜的结构型式的进行了选择与分析,最终采用反远距的物镜结构型式。在初始结构基础上,应用ZEMAX软件对投影物镜进行了光学设计,经优化后的物镜仅使用4组5片式元件,实现了低成本高透过率的性能；光学系统的传递函数在显示面板的截止频率处轴上与轴外均大于0.5,畸变小于1%,获得了较好的成像质量；应用像方远心光路实现了像面照度均匀度大于70%；物镜系统总长小于51mm,实现了微型投影结构紧凑、体积小的要求。【英文摘要】With fast technology development, the requirement of projector will not be limited only on its performance. Its portability and maneuverability will be paid more attention. Consequently, micro-projector will be mainly developing direction. Many manufactures compete to invest on micro-projector production.By the comparison of projector elements performance, LED is selected for projecting source, and LCOS chip for micro-display. The illuminating method of the micro-display element is in described detail.Based on calculation of optical parameters, the projection lens is selected and analyzed. The inverted telephoto lens is applied finally. From the initial structure, the projection lens is optimized by ZEMAX software. After optimization the objective is only composed of five-elements. The low-cost and high transmittance is realized. The on-axis and off-axis optical system transfer function are both above 0.5 at cut-off frequency. The distortion is less than 1%.The high quality image is acquired. By using image space telecentric optical path the illumination uniformity is more than 70%. The total length of the optical system is less than 51mm.The requirement of compact and small size for the micro- projector is achieved.【关键词】微型投影 LED照明 LCOS显示 反远距 光学设计【英文关键词】micro-projector LCOS display LED lighting inverted telephoto optical design【目录】微型投影光学系统设计摘要4-5ABSTRACT5目录6-7第一章 绪论7-141.1 引言7-81.2 微型投影机的发展8-121.2.1 DLP显示技术8-91.2.2 LCOS显示技术9-111.2.3 LCOS和DLP两种显示技术的对比11-121.3 微型投影的广阔市场前景12-14第二章 微型投影的原理与组成14-222.1 投影机的原理14-152.2 投影机的组成15-222.2.1 投影物镜15-172.2.2 照明系统17-22第三章 照明系统的分类与组成22-323.1 照明方式的分类22-233.2 照明系统的组成23-323.2.1 聚光镜的结构型式24-253.2.2 偏振光的产生25-273.2.3 偏振光转换装置PBS的应用27-283.2.4 照明系统的匀光28-32第四章 投影物镜中的像差及像质评价32-394.1 投影物镜的像差32-354.2 像差校正及平衡的方法35-374.3 投影物镜的像质评价37-39第五章 投影物镜的设计与优化39-525.1 投影物镜的成像原理39-405.2