Image Processing Systems Institute of RAS-Branch of the Federal Scientific Research Centre Crystallography and Photonics of Russian Academy of Sciences, 151 Molodogvardeyskaya st., 443001 Samara, Russia.
Department of Technical Cybernetics, Samara National Research University, 34 Moskovskoe shosse, 443086 Samara, Russia.
Sensors (Basel). 2020 Jul 14;20(14):3914. doi: 10.3390/s20143914.
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.
在这项研究中，提出了一种基于反射环形谐变透镜的紧凑型成像物镜配置。使用专用的特殊程序和 ZEMAX 软件对所提出的光学系统的光传播进行了全面建模，后者用于推导点扩散函数 (PSF)。使用了几个关系来描述物镜的关键参数之间的连接，包括其焦距、视场和厚度。我们证明了设计一种紧凑的成像物镜是可能的，其总长度可以比其焦距小一到两个数量级。使用直接激光写入技术，制造了反射环形谐变透镜，并将其用于所提出的物镜方案中。通过对光源和测试图案进行成像，对物镜的性能进行了实验研究。基于反射环形谐变透镜的紧凑型成像物镜的性能已在原理上得到验证。对于直径为 25 毫米、焦距为 100 毫米的透镜，实验获得了约 16 微米的 PSF 值。
