密码应变依赖光模式发生器
Cryptographic Strain-Dependent Light Pattern Generators
摘要：
折射自由形状组件由于其以高效率和低背景对光学信号进行空间调制的能力而变得越来越与产生受控的光图案相关。然而，这些装置的使用仍然受到制造具有复杂的三维（3D）表面浮雕的宏观元件的困难的限制。在这里，介绍了通过折射产生光图案的3D打印和可拉伸魔术窗。通过控制器件应变，可以改变形状，从而改变所获得的光纹理。通过示例性光图案（包括微QR码）来展示加密魔术窗口，所述微QR码在应变门控时被正确地投射和识别，同时对于所生产的装置保持神秘。微QR码的光图案也可以通过两个耦合的魔术窗口投射，其中一个作为解密密钥。这种具有3D形状和定制功能的新颖的自由形式元件与照明设计、智能标签、防伪系统和密码通信中的应用相关。
英文摘要：
Refractive freeform components are becoming increasingly relevant for generating controlled patterns of light, because of their capability to spatially-modulate optical signals with high efficiency and low background. However, the use of these devices is still limited by difficulties in manufacturing macroscopic elements with complex, 3-dimensional (3D) surface reliefs. Here, 3D-printed and stretchable magic windows generating light patterns by refraction are introduced. The shape and, consequently, the light texture achieved can be changed through controlled device strain. Cryptographic magic windows are demonstrated through exemplary light patterns, including micro-QR-codes, that are correctly projected and recognized upon strain gating while remaining cryptic for as-produced devices. The light pattern of micro-QR-codes can also be projected by two coupled magic windows, with one of them acting as the decryption key. Such novel, freeform elements with 3D shape and tailored functionalities is relevant for applications in illumination design, smart labels, anti-counterfeiting systems, and cryptographic communication.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
