SCREEN: SCatteREr ENabled optical asymmetry.

IF 8.5 1区 物理与天体物理 Q1 OPTICS
Optica Pub Date : 2025-06-20 Epub Date: 2025-05-27 DOI:10.1364/optica.549587
Yongyi Zhao, Sean M Farrell, Christian R Jacobson, A J Yates, Andrew McClung, Urcan Guler, Naomi J Halas, Peter Nordlander, Ashok Veeraraghavan
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引用次数: 0

Abstract

Optics that allow us to see clearly along one viewing direction while obscuring others' view of us are useful in numerous settings, including privacy-preserving window screens and one-way mirrors for psychological studies. Additionally, due to the rise of cameras that are able to see outside the visible spectrum, there is a need for optics that can also provide one-way visibility at these wavelengths. This is particularly challenging for thermal (i.e., infrared) imaging because most existing methods require precise control of scene illumination, which is difficult to achieve in the infrared. To address this challenge, we demonstrate broadband, passive one-way visibility by precisely tuning the position and optical parameters of a single optical scatterer. We show the benefits of our approach in both a simulated and an experimental testbed. With experimental data, we demonstrate a 5.22× and 5.23× improvement in the degree of asymmetry for midwave infrared (MWIR) and visible (VIS) wavelengths, respectively. Ultimately, our method introduces a robust, passive one-way visibility system at midwave infrared (MWIR), which can aid in numerous privacy preservation applications.

屏幕:散射启用光学不对称。
光学可以让我们沿着一个观看方向看得很清楚,同时模糊别人对我们的看法,这在很多情况下都很有用,包括保护隐私的窗纱和用于心理学研究的单向镜。此外,由于能够看到可见光谱以外的相机的兴起,需要能够在这些波长上提供单向可见的光学器件。这对于热成像(即红外成像)来说尤其具有挑战性,因为大多数现有方法需要精确控制场景照明,这在红外成像中很难实现。为了解决这一挑战,我们通过精确调整单个光散射体的位置和光学参数来演示宽带被动单向可见性。我们在模拟和实验测试平台中展示了我们的方法的优点。通过实验数据,我们证明了中红外(MWIR)和可见光(VIS)波长的不对称程度分别提高了5.22倍和5.23倍。最后,我们的方法在中波红外(MWIR)引入了一个鲁棒的被动单向可见系统,可以帮助许多隐私保护应用。
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来源期刊
Optica
Optica OPTICS-
CiteScore
19.70
自引率
2.90%
发文量
191
审稿时长
2 months
期刊介绍: Optica is an open access, online-only journal published monthly by Optica Publishing Group. It is dedicated to the rapid dissemination of high-impact peer-reviewed research in the field of optics and photonics. The journal provides a forum for theoretical or experimental, fundamental or applied research to be swiftly accessed by the international community. Optica is abstracted and indexed in Chemical Abstracts Service, Current Contents/Physical, Chemical & Earth Sciences, and Science Citation Index Expanded.
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