基于静态和低损耗聚合物稳定液晶屏幕的增强现实显示器中的激光斑点抑制功能

IF 2.1 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Photonics Journal Pub Date : 2024-10-17 DOI:10.1109/JPHOT.2024.3483209
Xin Jiang;Weilong Zhou;Wen Dong;Zhu Wang;Yifei Xie;Xinyue Tang;Zichun Le
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引用次数: 0

摘要

高相干性造成的激光斑点严重影响图像质量。传统的光学方法无法在不影响光路中激光相干性的情况下有效抑制斑点。在这项研究中,我们开发了一种方法,利用新型聚合物稳定液晶屏(PSLCS)显示图像,在保持激光相干性和高亮度的同时,有效抑制斑点。对 PSLCS 反射的光的散射引起的强度波动进行了评估,以揭示装饰相关性变化。通过调整驱动参数,确定了抑制斑点并通过激光投影和 AR 成像获得清晰、高分辨率图像的最佳参数。在不使用任何额外光学元件的情况下,斑点抑制效率达到了 67.34%,超过了其他类似方法。实验验证了 PSLCS 的多平面 AR 成像性能,据我们所知,这是首次研究 AR 成像中的图像质量和斑点抑制效果。所提出的高性价比激光斑点抑制方法实现了高质量成像,为基于 LC 的光学材料和器件在显示技术中的应用提供了新的可能性。
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Laser Speckle Suppression in Augmented Reality Displays Based on Static and Low-Loss Polymer-Stabilized Liquid Crystal Screens
Laser speckle caused by high coherence severely affects the image quality. The traditional optical approaches cannot effectively suppress speckles without compromising the coherence of the laser in the optical path. In this study, we develop a method in which a novel polymer-stabilized liquid crystal screen (PSLCS) was used to display images for efficient speckle suppression while preserving the coherence and high brightness of lasers. The scattering-induced fluctuations in the intensity of the light reflected from the PSLCS are evaluated to reveal decorrelation variation. The optimal parameters for suppressing speckles and obtaining a clear and high-resolution image via both laser projection and AR imaging are identified by adjusting the driving parameters. A speckle suppression efficiency of 67.34%, which exceeds that achieved by other similar methods, was achieved without using any additional optical elements. An experiment was implemented for verifying the performance of multi-plane AR imaging by a PSLCS, which, to our knowledge, is the first study to investigate the image quality and speckle suppression effect in AR imaging. The proposed cost-effective laser speckle suppression method enables high quality imaging, offering new possibilities for the application of LC-based optical materials and devices in display technology.
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来源期刊
IEEE Photonics Journal
IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS
CiteScore
4.50
自引率
8.30%
发文量
489
审稿时长
1.4 months
期刊介绍: Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.
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