微型投影論文：微型投影光學系統(tǒng)設計.doc

微型投影論文：微型投影光學系統(tǒng)設計【中文摘要】科技日新月異的今天,人們對投影機的要求不再局限于其功能,更注重其便攜性和可操作性,使得微型投影機成為投影設備發(fā)展的主流方向,成為眾多生產(chǎn)商家競相投資的熱點,都想在該領域占有一席之地。本文通過對投影元件性能的比較,選用LED作為微型投影的光源,選用LCOS芯片作為微顯示面板,并對顯示面板的照明方式進行了詳細的闡述。本文在對投影系統(tǒng)光學特性參數(shù)計算的基礎上,對投影物鏡的結構型式的進行了選擇與分析,最終采用反遠距的物鏡結構型式。在初始結構基礎上,應用ZEMAX軟件對投影物鏡進行了光學設計,經(jīng)優(yōu)化后的物鏡僅使用4組5片式元件,實現(xiàn)了低成本高透過率的性能；光學系統(tǒng)的傳遞函數(shù)在顯示面板的截止頻率處軸上與軸外均大于0.5,畸變小于1%,獲得了較好的成像質量；應用像方遠心光路實現(xiàn)了像面照度均勻度大于70%；物鏡系統(tǒng)總長小于51mm,實現(xiàn)了微型投影結構緊湊、體積小的要求?！居⑽恼縒ith 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.【關鍵詞】微型投影 LED照明 LCOS顯示 反遠距 光學設計【英文關鍵詞】micro-projector LCOS display LED lighting inverted telephoto optical design【目錄】微型投影光學系統(tǒng)設計摘要4-5ABSTRACT5目錄6-7第一章 緒論7-141.1 引言7-81.2 微型投影機的發(fā)展8-121.2.1 DLP顯示技術8-91.2.2 LCOS顯示技術9-111.2.3 LCOS和DLP兩種顯示技術的對比11-121.3 微型投影的廣闊市場前景12-14第二章 微型投影的原理與組成14-222.1 投影機的原理14-152.2 投影機的組成15-222.2.1 投影物鏡15-172.2.2 照明系統(tǒng)17-22第三章 照明系統(tǒng)的分類與組成22-323.1 照明方式的分類22-233.2 照明系統(tǒng)的組成23-323.2.1 聚光鏡的結構型式24-253.2.2 偏振光的產(chǎn)生25-273.2.3 偏振光轉換裝置PBS的應用27-283.2.4 照明系統(tǒng)的勻光28-32第四章 投影物鏡中的像差及像質評價32-394.1 投影物鏡的像差32-354.2 像差校正及平衡的方法35-374.3 投影物鏡的像質評價37-39第五章 投影物鏡的設計與優(yōu)化39-525.1 投影物鏡的成像原理39-405.2