本文選題：光學(xué)設(shè)計(jì) + 大孔徑��； 參考：《廣東工業(yè)大學(xué)》2017年碩士論文

【摘要】：投影顯示技術(shù)是實(shí)現(xiàn)大屏幕顯示的有效方式�？萍及l(fā)展突飛猛進(jìn),人們對投影顯示產(chǎn)品的,要求日益增高,而投影顯示也逐步向高分辨率、高亮度、大屏幕、微型化等方向發(fā)展。微型投影技術(shù)是一種新型的現(xiàn)代投影顯示技術(shù),它以其小型化的優(yōu)點(diǎn),攜帶方便,逐漸應(yīng)用到人們的日常生活中,特別在商務(wù)辦公,教學(xué),家庭影院等方面優(yōu)勢凸顯,成為投影顯示的發(fā)展趨勢。數(shù)字光處理(Digital Light Processing,DLP)投影顯示器具有高分辨率、高亮度、高對比度,結(jié)合發(fā)光二極管(lighting emitting diode,LED)光源優(yōu)勢,并加以自由曲面全內(nèi)反射(Total Internal Reflection,TIR)透鏡二次配光設(shè)計(jì),實(shí)現(xiàn)投影機(jī)的小型化,滿足人們對微投影儀的簡單和便攜的要求。首先,設(shè)計(jì)出一套非對稱三鏡組大孔徑變焦鏡頭,實(shí)現(xiàn)優(yōu)質(zhì)成像和光束約束:小光圈F#1.2(1.4),物方孔徑和焦距28mm和33mm,中鏡組實(shí)現(xiàn)3倍光學(xué)平滑變焦,系統(tǒng)長300mm;出光束3°~30°間寬幅調(diào)節(jié),總分辨率MTF值均大于限值(0.4)。光效利用率40%;常規(guī)材質(zhì),球面配光,構(gòu)建近標(biāo)準(zhǔn)化光學(xué)模組。其次,分析了DLP微投影顯示光學(xué)系統(tǒng),對投影機(jī)的成像鏡頭和照明分別進(jìn)行設(shè)計(jì)。在成像鏡頭中添加非球面結(jié)構(gòu)設(shè)計(jì)提高成像質(zhì)量。在照明部分設(shè)計(jì)中,用單個自由曲面TIR透鏡代替多片透鏡元件進(jìn)行準(zhǔn)直設(shè)計(jì)。縮小系統(tǒng)體積結(jié)構(gòu)且提高了光能利用效率。最后,介紹了自由曲面光學(xué)組件的特征、數(shù)學(xué)表達(dá)式及其設(shè)計(jì)思路。詳細(xì)分析自由曲面頭盔顯示器系統(tǒng)的光學(xué)設(shè)計(jì)過程,并設(shè)計(jì)出了FFS棱鏡結(jié)構(gòu)頭盔顯示器。通過對FFS棱鏡和傳統(tǒng)旋轉(zhuǎn)對稱結(jié)構(gòu)的比較分析,揭示了自由曲面在光學(xué)設(shè)計(jì)中的重要作用。
[Abstract]:Projection display technology is an effective way to realize large screen display. With the rapid development of science and technology, the demand for projection display products is increasing, and projection display is gradually developing towards the direction of high resolution, high brightness, large screen, miniaturization and so on. Micro projection technology is a new type of modern projection display technology. It has the advantages of miniaturization, convenient carrying, and gradually applied to people's daily life, especially in the aspects of business office, teaching, home theater and so on. Become the trend of projection display. Digital Light processing DLP) projection display has the advantages of high resolution, high brightness, high contrast, combined with the advantages of light-emitting diode illuminating emitting diodes (LED), and the secondary light distribution design of the free surface total Internal reflection (TIR) lens is carried out to realize the miniaturization of the projector. Meet the simple and portable requirements of microprojectors. First of all, a set of large aperture zoom lens with asymmetric three-mirror set is designed to achieve high quality imaging and beam constraint: small aperture F #1.2N 1.4, square aperture and focal length 28mm and 33mm, medium mirror group realize 3 times optical smoothing zoom, system length 300mm, and beam width between 3 擄and 30 擄. The total resolution MTF value is greater than the limit value of 0. 4%. Light efficiency 40; conventional materials, spherical light distribution, building a near-standardized optical module. Secondly, the DLP micro-projection display optical system is analyzed, and the imaging lens and illumination of the projector are designed respectively. The aspheric structure design is added to the imaging lens to improve the imaging quality. In the illumination design, a single free-form curved TIR lens is used to collimate instead of the multi-lens element. The volume structure of the system is reduced and the utilization efficiency of light energy is improved. Finally, the characteristics, mathematical expressions and design ideas of free-form surface optical components are introduced. The optical design process of freeform curved helmet display system is analyzed in detail, and the FFS prism structure helmet display is designed. Through the comparison and analysis of FFS prism and traditional rotational symmetric structure, the important role of free surface in optical design is revealed.
【學(xué)位授予單位】：廣東工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN873

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