Flexible speckle-free polymer-stabilized liquid crystal screen for laser projection

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2024-11-20 DOI:10.1016/j.optcom.2024.131321

Weilong Zhou , Yifei Xie , Zhu Wang , Chenhang Shen , Yuhang Zheng , Zichun Le , Lin Li

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Abstract

Despite considerable effort and progress, accomplishing speckle-free laser displays remain challenging, particularly in flexible displays. In this paper, we propose a novel and easy-to-implement method for developing a flexible polymer-stabilized liquid crystal (PSLC) screen. A uniformly alignment layer was achieved on polyethylene terephthalate substrates using a low-temperature curing system, and polystyrene (PS) microspheres are spin-coated to enhance the mechanical stability. The dynamic scattering of the PSLC effectively reduces laser speckle, leading to improved image clarity. When applied to a laser projection system, the developed flexible PSLC screen exhibits good image quality, low light-intensity loss, and a speckle suppression efficiency of 77.9%. Furthermore, it exhibits excellent optical performance, mechanical stability, and size adaptability, which are suitable for applications in flexible, transparent, and augmented/virtual reality displays; and other optical imaging scenarios.

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用于激光投影的柔性无斑点聚合物稳定液晶屏幕

尽管付出了巨大的努力并取得了长足的进步，但实现无斑点激光显示仍然充满挑战，尤其是在柔性显示方面。在本文中，我们提出了一种开发柔性聚合物稳定液晶（PSLC）屏幕的新颖且易于实施的方法。利用低温固化系统在聚对苯二甲酸乙二醇酯基底上形成均匀排列层，并旋涂聚苯乙烯（PS）微球以增强机械稳定性。PSLC 的动态散射可有效减少激光斑点，从而提高图像清晰度。当应用于激光投影系统时，所开发的柔性 PSLC 屏幕显示出良好的图像质量、低光强损耗和 77.9% 的斑点抑制效率。此外，它还具有出色的光学性能、机械稳定性和尺寸适应性，适合应用于柔性、透明和增强/虚拟现实显示屏，以及其他光学成像场景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.