新型雙螢幕立體影像顯示器之光學系統設計製作與應用

Abstract

隨著知識經濟時代的來臨，視覺影像處理及表達方式也越來越多元化，而現今的顯示器技術卻無法在單一畫面中完整及真實的呈現所有資訊。為了解決螢幕空間不足，並獲得虛擬實境的效果，本論文提出一新型雙螢幕3D顯示器來同時獲得兩個全螢幕大小的立體畫面。 根據菲涅耳定律，本光學系統設計能更精簡的只利用平面鏡和柱狀透鏡組成，以產生3D和雙螢幕的效果。而此微光學結構是以直寫式準分子雷射加工系統製作，相較於傳統黃光製程方法，如：灰階光罩及光阻熱熔等製程技術，能更精密的控制元件之光學品質、有效的減少其製程步驟與降低成本，以利大量生產。再藉由優化柱狀透鏡的曲率、尺寸及焦距後，串音效應可以有效的消除，進而達到廣視角的效果。因此，在導入影像處理技術於系統中，觀眾可以分別於上下螢幕中同時欣賞到兩個不同的立體影像。綜合實驗成果，本研究所提出的光學系統具高度潛力來轉換一般顯示器為新型雙螢幕3D顯示器，並更實際地被應用於顯示器產業。

3D technique is essential for achieving high realistic feelings of images in current displays. In this new era, things are more and more complicated. An ordinary display does not have characteristics to show all the specific information in a single screen. In order to solve the issues of insufficient screen space and also provide the realistic images, a novel 3D double-screen display is proposed to generate dual full-sized 3D images simultaneously. According to Snell’s Law, the proposed optical system for generating 3D and double-screen images is designed based on a single panel with only two additional components required: a planar mirror and a lenticular-lens based micro-optical structure. By modifying the lenticular-lens’ shape, size and position, the crosstalk issues were eliminated and the larger viewing angles were obtained. In addition, the micro-optical structure was fabricated by Excimer Laser Micromachining System without gray-scale mask. Based on its direct writing fabrication process, the shorter process time and the simpler steps are the advantages of producing huge amounts of precise functioning layers in economy and efficient. Moreover, the studies of implementing digital image processing and combining hardware components in the ordinary flat panel display provided viewers of two 3D images at top and bottom screens respectively and simultaneously. The low cost and simple converting technique of the proposed optical system for 3D double-screen displays, thus, promote the possibility of applications in display industry.