近接投影陣列自立體顯示器之研究

Autostereoscopic 3D Display With Proximity Projector Array

郭名晃(Ming-Huang Kuo)

指導教授 ： 陳政寰

國立清華大學/電機資訊學院/光電科技產業研發碩士專班/碩士(2007年)

摘要

立體顯示器為朝向自然視覺顯示技術發展之主要努力目標。因目前高性能關鍵組件的可實現性問題使目前立體顯示器遭遇到低解析度以及窄視角問題，導致立體顯示器在消費者市場上的低接受度。本研究以一新穎的概念，即藉由目前已有之近接投影陣列技術之方式構成一具有高解析度與廣視角之自立體顯示器。近接投影光學系統對微顯示器做低放大率之投影，可獲致僅數十微米之畫素，且將多個微投影螢幕接合即可獲得大面積及精細畫素之平面顯示器。配合傾斜的微柱面透鏡陣列則更能獲得高解析度以及廣視角之立體顯示器。本研究主要是針對近接投影陣列光學系統之設計與評估，以及傾斜的微柱面透鏡陣列之最佳化設計。本論文研究在單一模組近接投影光學系統之完成設計部分，所設計出之光學系統之MTF值在64lp/mm處至少可達到32%，最大畸變量小於0.1%，已可達到小於一個畫素大小且接近二分之ㄧ個畫素大小之間之範圍。另外，此光學系統所用的材料除了偏極分光器之外，透鏡部份全是用PC與COC等塑膠光學材料所組成，具有容易達到大量製造與降低成本的優點。

關鍵字

近接投影陣列 ； 偏極分光器 ； 微型顯示器 ； 微柱面透鏡陣列 ； 傾斜的微柱面透鏡陣列

並列摘要

Three dimensional display is the major effort toward natural vision in the development of display technology. Current 3D display suffers from the issues of low resolution and narrow viewing angle due to the availability of high performance key components, which results in low acceptability of 3D displays in the consumer market. In this research, a novel concept of constructing high resolution and wide viewing angle autostereoscopic 3D display by using proximity projector array has been proposed for solving the issue with currently available technology. A pixel size down to a few tens micro can be achieved by projecting microdisplay with low magnification ratio, and a large screen can be made by tiling up an array of such projected screen. Accompanying with slant lenticular array, it becomes possible to make a high resolution and wide viewing angle 3D displays. The major work of the research are the design and evaluation on the proximity projection optics, and optimization of slant lenticular array. In this research, the single proximity projection optics has been designed with the MTF value up to 32% at the spatial frequency of 64lp/mm and the greatest distortion value smaller than 0.1% which value is in between half to one pixel size. Besides to polarization beam splitter, all the lens are made of plastic optics materials, such as PC and COC, and therefore it can be potentially fabricated with low cost.

並列關鍵字

Proximity Projector Array ； Polarization Beam Splitter ； Microdisplay ； Lenticular Array ； Slanted Lenticular Array ； ZEMAX

參考文獻

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