- 學位論文
繞射光學元件於光場顯示器之設計與應用
Design and Application of Diffraction Optical Elements for Light Field Display
摘要
隨著現今科技的發展，顯示器已經成為人們生活中不可或缺的一部分，過去從黑白電視發展到彩色電視，如今不管是色彩或是畫質都已經發展成熟，也因此，近年來，立體顯示器的發展漸漸受到社會矚目，也愈來愈多關於立體顯示器的研究。然而，穿戴式的立體顯示器是目前較為常見的，而其限制是必須要配戴特殊裝置才能觀看，也因此這種類型的立體顯示器目前只有在電影院等場所才較為普遍使用。因此，裸眼式的立體顯示器是目前新興的一種顯示技術，期許未來能夠在不需配戴任何裝置的情況下使用，也能將此技術更廣泛應用於日常生活中。 為了達成立體視覺效果，大部分關於立體顯示器的研究都是利用雙眼視差來達成，光場顯示（Light Field Display）技術即是透過不同維度的調控來使雙眼能夠接收到不同影像，進而產生立體視覺。本研究中，設計出不同於常見的集成成像（Integral imaging）技術，利用在微小尺度下的波動特性，在光源上設置一片繞射元件以控制發光角度的方式，使不同影像能夠入射到人眼中，此繞射元件即為光柵（grating）。 本文提出一種3D光場顯示技術的架構，透過商用軟體MatLab®進行元件的設計與計算，並將設計出來的元件於光學模擬軟體RSoft®中建立模型、進行模擬，最後透過光學軟體LightTools®進行大尺度下的光線傳播模擬，驗證元件設計的正確性與了解人眼能夠接收到之光能量。
並列摘要
With the development of today's technology, monitors have become an indispensable part of people's lives. In the past, from black-and-white TV to colour TV, now both color and picture quality have matured. Therefore, in recent years, the development of stereoscopic displays has gradually attracted the attention of the society, and more and more researches have been conducted on stereoscopic displays. However, wearable stereoscopic displays are relatively common at present, and the limitation is that special devices must be worn for viewing. Therefore, these types of stereoscopic displays are currently only commonly used in places such as movie theaters. The autostereoscopic display is an emerging display technology. It is expected that it can be used without wearing any device in the future, and this technology can be more widely used in daily life. In order to achieve stereoscopic visual effects, most of the research on stereoscopic displays is achieved by using binocular parallax. Light Field Display technology enables the eyes to receive different images through the adjustment of different dimensions, thereby generating stereoscopic vision. In this study, different from the common Integral imaging technology, using the wave optics characteristics at a micro scale, a diffraction optical element is arranged on the light source to control the light-emitting angle, so that different images can be incident on the human eye, the diffraction element called grating. This thesis proposes a framework of 3D Light Field Display technology. The components are designed and calculated through the commercial software MatLab®, and the designed components are modeled and simulated in the optical simulation software RSoft®. Finally, the optical software LightTools® is used for large-scale simulation. Light propagation simulation to verify the correctness of component design and understand the light energy that the human eye can receive.