臺灣大學: 光電工程學研究所林晃巖吳爾軒Wu, Er-HsuanEr-HsuanWu2013-03-272018-07-052013-03-272018-07-052012http://ntur.lib.ntu.edu.tw//handle/246246/253421大畫面沉浸效果可使觀眾得到視覺臨場感而增進欣賞樂趣，故沉浸式顯示器乃顯示產業發展之趨勢。惟應用於平面顯示器之玻璃基板尺寸愈大，製程難度與運輸成本愈高，恐怕面臨瓶頸，將對於大型顯示器之生產形成阻礙。顯然，小型顯示器之並列顯示亦可產生大畫面，但邊框對於顯示器之並列顯示造成阻礙，故本文研究一種消除顯示器邊框之方法，並設計一種應用於消除邊框之光學元件，使小型顯示器可透過並列顯示提供大畫面沉浸效果。 本文基於虛像成像，試圖透過放大顯示器有效顯示區域遮蔽顯示器邊框。惟一般成像光學均著眼於輸入像素、輸出像素、光學元件三者共軸於該光學元件之旋轉對稱軸之情況，在本文中即正視角之情況，但本元件應用於顯示器，與觀察者之相對位置並非固定，具有視角問題，而有賴於嚴格定義與詳細分析加以解決，故本文乃透過分區設計法，以若干不同曲率之透鏡構成本元件。在二維分析下，該若干透鏡形狀剖面均為圓弧。該若干圓弧經過平滑處理，即可逼近作為本元件形狀剖面之理想曲線。 本文遂基於上述方法設計各二維模型，並透過光學模擬軟體LighttoolsR驗證其均具有遮蔽邊框之效果，更透過計算其所造成之影像扭曲，驗證在設計本元件時，若分區愈細密，則本元件效果愈佳。為化簡模型，本文亦嘗試透過調變輸入影像修正影像扭曲。在理論計算與模擬結果之相輔相成下，本元件所造成之亮度損失與色散問題均被驗證為極輕微。從而，在三維分析下，透過探討邊界條件，本文在影像之連續性與角落邊框之遮蔽間，得到最佳之權衡，而三維模型之效果亦在模擬結果中得到驗證。Large-view immersion brings visual reality, and gives great entertainment to audiences, so that the production of immersive displays becomes a tendency of display industry. However, the development of glass substrates of FPDs (flat panel displays) is confronted with bottlenecks, such as manufacture difficulty and transportation cost, as its size goes large. We can easily think of tiling small displays to provide large view, but the gaps around FPDs obstruct our tiling. This inspired us to eliminate the gaps to achieve the effect of immersion. Based on virtual imaging, we designed certain optical elements, which function to cover the gaps of FPDs with the magnification of their active area. Since we could not restrict observers in a certain viewing angle, we should consider not only the case of front view but also the cases of lateral views in our design. Therefore, we introduced a method called “the partition design” to form our elements, which are shaped by combination of lenses with different curvatures. As the partition design is of approximation, we carried out smoothing to wipe out the cusps on our elements. With strict definitions and detailed analyses, we built 4 types of 2D models, verifying their effects of immersion by optical simulation software LighttoolsR. We also calculated their image distortion, proving that more delicate partition design results in better image quality. For model degeneration, We tried image distortion correction by adjusting the input image. By comparing simulation results to theoretical calculations, we found out low luminance loss and low dispersion in our elements. Moreover, we built 3 types of 3D models with optimized trade-off between the image continuity and the corner gap, and had an observation on their effects of immersion by LighttoolsR.4570817 bytesapplication/pdfen-US顯示器邊框沉浸幾何光學displaygapimmersivegeometric opticsthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/253421/1/ntu-101-R99941033-1.pdf