不同的裸眼式3D立體顯示器觀賞品質之比較研究

A Comparative Study on Visual Performance of Different Autostereoscopic Displays

陳相如(Hsiang-Ju Chen)

指導教授 ： 林晃巖

國立臺灣大學/電機資訊學院/光電工程學研究所/碩士(2011年)

https://doi.org/10.6342/NTU.2011.00866

摘要

近年來，由於人們不斷的追求更逼真的影像，因此3D立體顯示器成為平面顯示器中最閃亮的一顆新星，而不用配戴特殊裝置，即可觀賞到立體影像的裸眼式立體顯示器，由於更符合一般觀賞者的使用習慣，因此吸引許多科技大廠相繼投入研究。目前用於裸眼式立體顯示器的3D技術，主要有視差屏障和柱狀透鏡技術，而另一種電濕潤微稜鏡技術亦被提出。目前來說，尚無特定的裸眼式3D技術成為主流技術，主要由於這些技術目前尚有各自的優點及限制，較難一次滿足所有的需求。

為了更加了解使用這三種3D技術的裸眼式顯示器間觀賞品質的差異，加上顯示器的系統參數和其觀賞品質是彼此相關的，因此本論文提出一共同平台稱為觀賞參考面板，當作比較不同技術間觀賞品質的基準，透過這樣的方式使我們能夠客觀比較不同技術間的觀賞品質。我們使用光學模擬軟體LighttoolsTM建立裸眼式顯示器的模擬模型，並模擬其光學特性，並且探討面板的系統參數對於不同技術的觀賞品質之影響及趨勢。我們並從觀賞者的角度出發，比較觀賞者觀看顯示器時最在乎的幾項觀賞品質，包括光輝度的大小、均勻度、交互干擾值的大小、頭可左右擺動的幅度即觀賞區域的大小及可看到清晰3D影像的角度範圍即可視張角。

而由模擬結果可知，就光輝度來說柱狀透鏡式顯示器最佳，光輝度的均勻度則是電濕潤微稜鏡透鏡式顯示器最好，觀賞區域的寬度及可視張角則是視差障式顯示器最大，但其過高的亮度損失仍是需要被克服的。透過本篇論文的研究結果，能使我們對於這三種3D技術的光學特性及彼此間的差異更為了解，往後在設計顯示器時，我們可根據顯示器的使用用途及最在乎的觀賞品質項目，而使用不同的3D技術。

關鍵字

裸眼式3D立體顯示器 ； 觀賞品質 ； 觀賞參考面板

並列摘要

In recent years, three-dimensional (3D) displays have drawn great attention in the flat panel display industry due to the fact that viewers keep pursuing more realistic images. For such a reason, many technological giants have got involved in the field of 3D displays especially autostereoscopic displays without wearing additional accessories. For the current autostereoscopic displays that can be viewed with the naked eye, either a lenticular lens or a parallax barrier is mainly utilized. Besides, an autostereoscopic display based on electrowetting microprism (EMP) lens has been also introduced. At present, none of the autostereosopic 3D technology is dominant, because all of these technologies have their own superiority and limitation. It is difficult for them to satisfy all needs.

Considering that system parameters of a display are correlated to its visual performance, therefore, in order to understand the difference among autostereocopic displays based on parallax barrier, lenticular lens and EMP lens, we proposed a common platform called “Visual Based Panel” as the basis to evaluate these technologies. Through this way, we could objectively compare the visual performance of different autostereoscopic displays. Optical software LighttoolsTM is applied to construct the simulation models of autostereoscopic displays and simulate optical characteristics of them. Moreover, we also investigated the influence and tendency of system parameters of panels on the visual performance of different displays. From the viewer’s perspective, we compared several types of visual performance that the viewers mostly care about, including luminance, uniformity, crosstalk, viewing zone and viewing field angle.

By the simulation results, it is clear that in terms of luminance, the display based on lenticular lens is brightest while that based on EMP lens is superior in the uniformity of luminance. In addition, the display based on parallax barrier has the widest viewing zone and viewing field angle. However, its excessive loss of brightness is a major drawback which still needs to be overcome. Through the research of the paper, we could gain a better understanding of these three different 3D technologies in terms of their optical characteristics and individual differences, which offers a good reference for the future designing of displays that can choose a technology based on the purpose of usage and the most highly valued visual performance.

並列關鍵字

autostereoscopic display ； visual performance ； visual based panel

參考文獻

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