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

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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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, MTF) 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.

Original languageEnglish
Title of host publicationNinth Symposium on Novel Photoelectronic Detection Technology and Applications
EditorsJunhao Chu, Wenqing Liu, Hongxing Xu
PublisherSPIE
ISBN (Electronic)9781510664432
DOIs
Publication statusPublished - 2023
Event9th Symposium on Novel Photoelectronic Detection Technology and Applications - Hefei, China
Duration: 21 Apr 202323 Apr 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12617
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference9th Symposium on Novel Photoelectronic Detection Technology and Applications
Country/TerritoryChina
CityHefei
Period21/04/2323/04/23

Keywords

  • Night Vision System
  • Optical Design
  • Stray Light Analysis
  • Zoom System

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