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1、微型投影論文：微型投影光學(xué)系統(tǒng)設(shè)計(jì)【中文摘要】科技日新月異的今天,人們對投影機(jī)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(jī)成為投影設(shè)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(diǎn),都想在該領(lǐng)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(jìn)行了詳細(xì)的闡述。本文在對投影系統(tǒng)光學(xué)特性參數(shù)計(jì)算的基礎(chǔ)上,對投影物鏡的結(jié)構(gòu)型式的進(jìn)行了選擇與分析,最終采用反遠(yuǎn)距的物鏡結(jié)構(gòu)型式。在初始結(jié)構(gòu)基礎(chǔ)上,應(yīng)用ZEMAX軟件對投影物鏡進(jìn)行了光學(xué)設(shè)計(jì),
2、經(jīng)優(yōu)化后的物鏡僅使用4組5片式元件,實(shí)現(xiàn)了低成本高透過率的性能；光學(xué)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(zhì)量；應(yīng)用像方遠(yuǎn)心光路實(shí)現(xiàn)了像面照度均勻度大于70%；物鏡系統(tǒng)總長小于51mm,實(shí)現(xiàn)了微型投影結(jié)構(gòu)緊湊、體積小的要求?！居⑽恼縒ithfasttechnologydevelopment,therequirementofprojectorwillnotbelimitedonlyonitsperformance.Itsportabilityandmaneuverabilit
3、ywillbepaidmoreattention.Consequently,micro-projectorwillbemainlydevelopingdirection.Manymanufacturescompetetoinvestonmicro-projectorproduction.Bythecomparisonofprojectorelementsperformance,LEDisselectedforprojectingsource,andLCOSchipformicro-display.Theilluminatingm
4、ethodofthemicro-displayelementisindescribeddetail.Basedoncalculationofopticalparameters,theprojectionlensisselectedandanalyzed.Theinvertedtelephotolensisappliedfinally.Fromtheinitialstructure,theprojectionlensisoptimizedbyZEMAXsoftware.Afteroptimizationtheobjectiveis
5、onlycomposedoffive-elements.Thelow-costandhightransmittanceisrealized.Theon-axisandoff-axisopticalsystemtransferfunctionarebothabove0.5atcut-offfrequency.Thedistortionislessthan1%.Thehighqualityimageisacquired.Byusingimagespacetelecentricopticalpaththeilluminationuni
6、formityismorethan70%.Thetotallengthoftheopticalsystemislessthan51mm.Therequirementofcompactandsmallsizeforthemicro-projectorisachieved.【關(guān)鍵詞】微型投影LED照明LCOS顯示反遠(yuǎn)距光學(xué)設(shè)計(jì)【英文關(guān)鍵詞】micro-projectorLCOSdisplayLEDlightinginvertedtelephotoopticaldesign【目錄】微型投影光學(xué)系統(tǒng)設(shè)計(jì)摘要4-5ABSTRACT5目錄6
7、-7第一章緒論7-141.1引言7-81.2微型投影機(jī)的發(fā)展8-121.2.1DLP顯示技術(shù)8-91.2.2LCOS顯示技術(shù)9-111.2.3LCOS和DLP兩種顯示技術(shù)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(jī)的原理14-152.2投影機(jī)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(jié)構(gòu)型式24-253.2.2偏振光的產(chǎn)生25-2
8、73.2.3偏振光轉(zhuǎn)換裝置——PBS的應(yīng)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(zhì)評價(jià)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(zhì)評價(jià)37-39第五章投影物鏡的設(shè)計(jì)與優(yōu)化39-5
