體積全像技術用於資訊儲存及三維立體顯示之研究

Abstract

本計畫旨在探索『體積全像技術用於資訊儲存及三維立體顯示之研究』，內容包括兩大 項目：(1). 研製低收縮高分子體積全像材料，進行新穎的全像紀錄機制與特性研究，並進行 資訊儲存應用研發。(2). 研究全像3D 顯示器技術，著重於基礎的理論與光學系統設計，顯示 器件與光源元件之探討。 在低收縮高分子體積全像材料方面，將承續實驗室研發之PQ/PMMA 高分子體積全像材 料的經驗及技術，首先完善兩階段熱聚合製程的技術，發展高光學品質的塊材製程，其次， 著重於兩種新穎的全像記錄方式研究：偏極化全像與雙波長全像。我們將以實驗進行光化學 分析，研究其記錄的物理機制，提供全像紀錄理論模型建立之基礎，且同時建立各式量測系 統進行相關光學實驗分析，量測全像記錄特性，配合相關記錄機制理論模擬比較，建立材料 參數提供規範制定與取捨，探索及設計其在光學資訊處理的相關應用。 在全像3D 顯示器技術方面，將以實驗室建立體積全像技術出發，進行應用液晶平面顯 示器元件，展示真實立體影像的前瞻性研究。首先，研製大尺寸面積之光感高分子紀錄底片， 進行全像光學紀錄與重建實驗，藉以研究全像顯示器所需各項基本特性，同時研究各類型液 晶顯示面板的相位及振幅調制特性，嚐試顯示實物全像所需各項特性；其次，進行空間同調 重建光源的研究，並以體積全像設計製作，以及研究電腦產生全像技術，設計產生3D 實物 全像片，並加入顯示器參數與波前取樣等因素，模擬其對重建影像品質之影響；最後結合這 些概念，以實驗展示單色的全像3D 顯示器。 綜合理論與實驗之執行，吾人預期可以得到許多關鍵性成果，作為後續整合發展全像資 訊儲存處理以及全像3D 影像顯示系統的重要基礎。

We propose to launch a long term theoretical and experimental investigation on the possibility of using volume holographic technology for information storage and display of 3D holographic images. For information storage, based on current research results of developing the PQ/PMMA photopolymer, we will study the key issue for two-step thermo-polymerization technique, and propose a system metric for fabricating bulk sample with good optical quality. Using these materials, novel holographic recordings including polarization hologram and two-color holographic recording will be explored. The physical mechanism of these novel holographic recordings in our photopolymer materials will be studied and experimentally characterization of recording properties will be performed. The results provide the guidelines for designing and optimizing materials. In addition, according to holographic recording properties of the materials, we will explore their applications on optical information storage and processing. For display of 3D holographic images, three key enabling technologies will be studied, including concept development and theoretical analysis of novel holographic display system, modulation of display pixel and a spatially coherent lighting. Therefore, in the proposed program, we will first use the developed low-shrinkage photopolymer to record and reconstruct holographic 3D images in order to collect the knowledge and carry out concept design of novel holographic display system. We then focus both theoretical and experimental investigation on the possibility of displaying holographic images using liquid crystal display panels. Specifically, the tasks include (a). modulation and driving properties of the liquid crystal display panels; (b). volume holographic flat spatial coherent backlight; (c). information content for novel design generated by IFTA computer generated holographic method plus wavefront sampling. In the long term investigation, the results of these research tasks can be integrated into a display system of 3D holographic images. In summary, this research will perform an intensive study on novel applications of volume holographic technique. The developed materials and recording technique are expected to be a new invention, and the study will also possibly lead to exploring new physical mechanisms of holographic recording in photopolymer material. The developed display system of 3D holographic images will also be leading technology that can display real 3D images without having to wear a pair of special eyeglasses.