<br>基于彩色液晶光栅的大视角彩色全息3D显示系统,Light: Science & Applications

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基于彩色液晶光栅的大视角彩色全息3D显示系统
Light: Science & Applications ( IF 20.6 ) Pub Date : 2024-01-15 , DOI: 10.1038/s41377-023-01375-0
Di Wang _{1,

2} , Yi-Long Li ₁ , Fan Chu ₁ , Nan-Nan Li ₁ , Zhao-Song Li ₁ , Sin-Doo Lee ₃ , Zhong-Quan Nie ₄ , Chao Liu ₁ , Qiong-Hua Wang _{1,

2}

Affiliation

摘要全息 3D 显示对于从医疗到军事等众多应用来说都是非常理想的。然而，由于现有技术的棘手限制，同时实现大视角和高保真色彩重建具有挑战性。在这里，我们概念性地提出并实验证明了一种简单可行的途径，即使用精心设计的彩色液晶光栅来克服不可避免的色差并扩大全息视角，从而实现大视角和彩色全息3D显示。彩色液晶光栅的使用可以同时对红、绿、蓝再现图像进行二次衍射调制，并扩展全息3D显示系统中的视角。原则上，提出了一种与彩色液晶光栅相结合的无色差全息图生成机制，为这种卓越的全息3D显示器铺平了道路。该系统的色彩视角约为 50.12°，约为具有单个空间光调制器的传统系统的 7 倍。这项工作为实现理想的全息3D显示提供了范例，有望为全息显示的广泛应用提供新的途径。

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Color liquid crystal grating based color holographic 3D display system with large viewing angle

AbstractHolographic 3D display is highly desirable for numerous applications ranging from medical treatments to military affairs. However, it is challenging to simultaneously achieve large viewing angle and high-fidelity color reconstruction due to the intractable constraints of existing technology. Here, we conceptually propose and experimentally demonstrate a simple and feasible pathway of using a well-designed color liquid crystal grating to overcome the inevitable chromatic aberration and enlarge the holographic viewing angle, thus enabling large-viewing-angle and color holographic 3D display. The use of color liquid crystal grating allows performing secondary diffraction modulation on red, green and blue reproduced images simultaneously and extending the viewing angle in the holographic 3D display system. In principle, a chromatic aberration-free hologram generation mechanism in combination with the color liquid crystal grating is proposed to pave the way for on such a superior holographic 3D display. The proposed system shows a color viewing angle of ~50.12°, which is about 7 times that of the traditional system with a single spatial light modulator. This work presents a paradigm for achieving desirable holographic 3D display, and is expected to provide a new way for the wide application of holographic display.

更新日期：2024-01-15

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