Optical setup for evaluating image quality of thermal imaging lenses working in the spectral region of 8÷12 µm

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Authors

  • Tran Anh Quang Le Quy Don Technical University
  • Le Duy Tuan (Corresponding Author) Le Quy Don Technical University
  • Le Hoang Hai Le Quy Don Technical University

DOI:

https://doi.org/10.54939/1859-1043.j.mst.82.2022.134-141

Abstract

In this paper, we demonstrate a homemade setup and an image processing algorithm to evaluate the image quality of optical systems working in the spectral region of 8-12 µm. The working principle of our approach relies on measuring the line spread function (LSF) and the modulation transfer function (MTF). All components in the setup are carefully designed and manufactured, and we strictly follow quality control to limit measurement errors. The setup can determine the LSF and MTF of a thermal imaging lens with a focal length of f' ≤ 500 mm and pupil diameter D ≤ 100 mm. A number of objective samples have been studied using our setup, and the experimental results indicate that our setup can work reliably with high accuracy.

References

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[7]. Tran Anh Quang, Le Duy Tuan, Le Hoang Hai, Le Van Nhu, “Design and manufacture of a microscpoe objective used to test optical systems working in the spectral region of 8÷12 µm”, The 6th Academic Conferfence On Natural Science For Young Scientists, Master & PhD Students From Asean Countries, (2021).

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Published

28-10-2022

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