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arXiv 2202.11535physics.opticscs.CVcs.LGeess.IV
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衍射光学系统的级联设计

Diffractive optical system design by cascaded propagation

Russel Berrie Nanotechnology Institute(拉塞尔·贝里纳米技术研究所);Technion - Israel Institute of Technology(以色列理工学院);Lorry I. Lokey Center for Life Sciences and Engineering(洛里·I·洛基生命科学与工程中心)

Boris Ferdman, Alon Saguy, Onit Alalouf, Yoav Shechtman

摘要:

复杂光学系统的现代设计在很大程度上依赖于计算工具。这些通常利用几何光学以及傅立叶光学,这使得能够使用衍射元件来操纵具有波长尺度上的特征的光。傅立叶光学通常用于设计薄元件,放置在系统的孔径中,产生平移不变的点扩散函数(PSF)。在许多感兴趣的情况下应用傅立叶光学的主要瓶颈,例如,当处理多个或孔径外元件时,来自数值复杂性。在这项工作中,我们提出并实现了一个有效的和可微的传播模型的基础上的柯林斯积分,这使得前所未有的设计自由度使用反向传播的衍射光学系统的优化。我们通过数值和实验证明了我们的方法的适用性,通过放置在复杂成像系统内的任意平面上的薄板元件来设计移位可变PSF,执行多个平面的级联优化,并通过深度学习设计最佳机器视觉系统。

英文摘要:

Modern design of complex optical systems relies heavily on computational tools. These typically utilize geometrical optics as well as Fourier optics, which enables the use of diffractive elements to manipulate light with features on the scale of a wavelength. Fourier optics is typically used for designing thin elements, placed in the system's aperture, generating a shift-invariant Point Spread Function (PSF). A major bottleneck in applying Fourier Optics in many cases of interest, e.g. when dealing with multiple, or out-of-aperture elements, comes from numerical complexity. In this work, we propose and implement an efficient and differentiable propagation model based on the Collins integral, which enables the optimization of diffraction optical systems with unprecedented design freedom using backpropagation. We demonstrate the applicability of our method, numerically and experimentally, by engineering shift-variant PSFs via thin plate elements placed in arbitrary planes inside complex imaging systems, performing cascaded optimization of multiple planes, and designing optimal machine-vision systems by deep learning.

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。

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