In this study, a configuration of a compact imaging objective based on a reflecting annular harmonic lens was proposed. Light propagation through the proposed optical system was comprehensively modeled using a dedicated special program and the ZEMAX software, with the latter used to derive the point spread function (PSF). Several relationships were used to describe the connection between key parameters of the objective, including its focal length, field of view, and thickness. We demonstrated that it was possible to design a compact imaging objective whose overall length could be one to two orders of magnitude smaller than its focal length. Using direct laser writing, a reflecting annular harmonic lens was fabricated and used in the proposed objective scheme. The performance of the objective was experimentally studied by imaging a light source and a test pattern. The performance of the compact imaging objective based on a reflecting annular harmonic lens was verified in principle. A PSF value of approximately 16 microns was experimentally obtained, for a lens with a diameter of 25 mm with a focal length of 100 mm.

中文翻译：

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基于环形谐波透镜的紧凑型成像系统。

在这项研究中，提出了一种基于反射环形谐波透镜的紧凑型成像物镜的配置。使用专用的专用程序和ZEMAX软件对通过提议的光学系统的光传播进行了全面建模，并使用ZEMAX软件来推导点扩散函数（PSF）。几个关系被用来描述物镜关键参数之间的联系，包括其焦距，视野和厚度。我们证明了有可能设计一个紧凑的成像物镜，其总长度可能比其焦距小一到两个数量级。使用直接激光写入，制造了一个反射环形谐波透镜，并在提出的物镜方案中使用。通过成像光源和测试图案，对物镜的性能进行了实验研究。原则上验证了基于反射环形谐波透镜的紧凑型成像物镜的性能。对于直径为25 mm，焦距为100 mm的透镜，实验获得了约16微米的PSF值。