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6 November 2023 Optimal design of middle-wavelength infrared dual field-of-view optical system
Peipei Yan, Huaili Zhang, Kai Liu, Kai Jiang, Jing Duan, Qiusha Shan
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Proceedings Volume 12921, Third International Computing Imaging Conference (CITA 2023); 129211N (2023) https://doi.org/10.1117/12.2688535
Event: Third International Computing Imaging Conference (CITA 2023), 2023, Sydney, Australia
Abstract
A middle infrared dual Field-of-View (FOV) optical system with staring focal plane array and reimaging optics is presented for cool 640×512 detector. Based on zoom system principle and optical design software the Modulation Transfer Function (MTF) curve spot diagram and the encircled energy are investigated. The design results show that this system can realize 300mm/600mm dual field-of-view at the spectrum region of 3.7～4.8um and the F number of four, which can obtain the cold shield efficiency of 100% and the MTF more than 0.2 at the spatial frequency of 33lp/mm. The optical system is analyzed in two modes of long focal length and short focal length, and results show that it has the advantages of simple structure, high image quality, low price and easy to adjustment.
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Peipei Yan, Huaili Zhang, Kai Liu, Kai Jiang, Jing Duan, and Qiusha Shan "Optimal design of middle-wavelength infrared dual field-of-view optical system", Proc. SPIE 12921, Third International Computing Imaging Conference (CITA 2023), 129211N (6 November 2023); https://doi.org/10.1117/12.2688535
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KEYWORDS
Modulation transfer functions
Image quality
Design and modelling
Mid-IR
Optical design
Zoom lenses
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