Design and stray light analysis of a high NA night vision zoom optical system

Bingqing Xie; Jun Chang; Yiting Li; Xuyang Li; Yi Huang

doi:10.1117/12.2666850

4 April 2023 Design and stray light analysis of a high NA night vision zoom optical system

Bingqing Xie, Jun Chang, Yiting Li, Xuyang Li, Yi Huang

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126177I (2023) https://doi.org/10.1117/12.2666850
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

In order to solve the problems of limited clear viewing range and small field angle of the existing night vision equipment, a large numerical aperture zoom night vision objective is designed combined with the zoom optical imaging technology. The night vision zoom objective designed uses a lens with large curvature on the first surface to achieve large field of view detection. The aspheric surface is added to improve the imaging quality of the system and reduce the weight of the system, so that users can have a better user experience when using the objective lens. The operating band of the objective lens is 436nm-656nm, the focus range is 4.5mm-40mm, and the maximum field angle can reach 74°. Finally, through simulation analysis, the MTF (Modulation Transfer Function) of the system at Nyquist frequency under different focal lengths is greater than 0.3, and the imaging quality is good. Through stray light analysis, it is found that the designed system is less affected by stray light in the central field of view and the half field of view, while the edge field of view is more affected by stray light.

Citation Download Citation

Bingqing Xie, Jun Chang, Yiting Li, Xuyang Li, and Yi Huang "Design and stray light analysis of a high NA night vision zoom optical system", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126177I (4 April 2023); https://doi.org/10.1117/12.2666850

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KEYWORDS

Zoom lenses

Night vision

Imaging systems

Design and modelling

Technology

Night vision systems

Objectives

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