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13 November 2024 Design of spatial infrared freeform optical system with large field of view
Baohua Wang, Yang Li, Yunsong Nie, Yuanyuan Wang
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Proceedings Volume 13280, Advanced Optical Manufacturing Technologies and Applications 2024; and Fourth International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2024); 132800W (2024) https://doi.org/10.1117/12.3047742
Event: Second Conference on Advanced Optical Manufacturing Technologies and Applications & Fourth Forum of Young Scientists on Advanced Optical Manufacturing, 2024, Xi'an, China
Abstract
The demand for spatial infrared remote sensors with high spatial resolution and wide imaging swatch becomes more and more urgent. Optical system is an important constraint on the performance of spatial infrared remote sensors. In this paper, a novel off-axis catadioptric optical system configuration with intermediate image is proposed. The imaging principle and the initial configuration solution method are analyzed. And an off-axis catadioptric freeform optical system is designed with the spectrum of 7.8-10.2μm, the aperture of 435 mm, the focal length of 1038 mm, and the field of view (FOV) of 9×1.1°. The modulation transfer function (MTF) value is better than 0.316@25lp/mm. The maximum relative distortion is -0.27%. And this optical system has good image-side telecentricity and image illumination consistency. The results show that the spatial infrared off-axis catadioptric freeform optical system has good imaging quality and engineering feasibility.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Baohua Wang, Yang Li, Yunsong Nie, and Yuanyuan Wang "Design of spatial infrared freeform optical system with large field of view", Proc. SPIE 13280, Advanced Optical Manufacturing Technologies and Applications 2024; and Fourth International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2024), 132800W (13 November 2024); https://doi.org/10.1117/12.3047742
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KEYWORDS
Infrared imaging
Infrared sensors
Imaging systems
Modulation transfer functions
Design
Spatial resolution
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