A Field Guide to Azopolymeric Optical Fourier Surfaces and Augmented Reality,Advanced Functional Materials

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A Field Guide to Azopolymeric Optical Fourier Surfaces and Augmented Reality
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2021-07-18 , DOI: 10.1002/adfm.202104105
Yongjun Lim ₁ , Byungsoo Kang ₂ , Seung Jae Hong ₃ , Heeju Son ₂ , Eunji Im ₁ , Joona Bang ₃ , Seungwoo Lee _{1,

2,

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Affiliation

Optical Fourier surfaces (OFSs) are used for various applications, from diffractive optics to augmented reality (AR). However, the current methods of fabricating OFSs primarily rely on lithographic photochemical reactions and etching. These methods are likely to fabricate digitalized binary reliefs, which cannot match the ideal surface profile of OFSs. Such a profile is the sum of sinusoidal surfaces with various spatial frequencies. As an exception, scanning probe lithography (SPL) is found to be compatible with OFSs. However, the accessible pattern area of the OFSs created via SPL is relatively small owing to the serial feature of the fabrication, which in turn results in an undesired and complicated Fourier spectrum. In this article, the holographic inscription is redesigned for the low-cost, large-area, and rapid prototyping of customized OFSs. To this end, an integrative pipeline is established across numerical design, material optimization, and the pragmatic considerations of optical processing. Then, a soft molding strategy is suggested for optically transparent and flexible OFSs and its use for easy-to-craft AR devices. Overall, this intuitive framework not only expands the scope of Fourier optics but also acts as a field guide to azopolymeric OFSs and AR technology for experts and newcomers alike.

中文翻译：

偶氮聚合物光学傅立叶表面和增强现实领域指南

光学傅里叶表面 (OFS) 用于各种应用，从衍射光学到增强现实 (AR)。然而，目前制造 OFS 的方法主要依赖于光刻光化学反应和蚀刻。这些方法可能会制造数字化二进制浮雕，无法与理想的 OFS 表面轮廓相匹配。这种轮廓是具有各种空间频率的正弦曲面的总和。作为一个例外，发现扫描探针光刻 (SPL) 与 OFS 兼容。然而，由于制造的串行特征，通过 SPL 创建的 OFS 的可访问图案区域相对较小，这反过来会导致不希望的和复杂的傅立叶光谱。在本文中，全息铭文针对定制OFS的低成本、大面积和快速原型进行了重新设计。为此，在数值设计、材料优化和光学处理的实用考虑方面建立了一条综合管道。然后，提出了一种用于光学透明和灵活的 OFS 的软成型策略，并将其用于易于制作的 AR 设备。总体而言，这个直观的框架不仅扩展了傅立叶光学的范围，而且还为专家和新手等提供了偶氮聚合物 OFS 和 AR 技术的现场指南。

更新日期：2021-09-24

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