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15 February 2022 Design of wide-band dual-field infrared optical system
Xiao-ru Yang, Jian Han, Ze-shuai Xu, Liang Zhang, He-long Wang
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Proceedings Volume 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021); 121664P (2022) https://doi.org/10.1117/12.2617345
Event: Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 2021, Hong Kong, Hong Kong
Abstract
A wide-band dual-field optical system working at 1-5μm is designed. The freeform off-axis three-mirror optical structure is adopted for the narrow field design with adding a plane mirror to fold the optical path. The focal length is 600mm, the f-number is 6, and the field of view is 2.34°×2.34°. The wide field is designed with a lens group, where the focal length is 17.3mm, the f-number is 2, and the diagonal field of view is 30°. In terms of arrangement, a hole is dug in the center of the primary mirror of the off-axis three-mirror system as the clear aperture of the lens group, so as to realize simultaneous imaging of the same target through both optical paths.
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Xiao-ru Yang, Jian Han, Ze-shuai Xu, Liang Zhang, and He-long Wang "Design of wide-band dual-field infrared optical system", Proc. SPIE 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 121664P (15 February 2022); https://doi.org/10.1117/12.2617345
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KEYWORDS
Mirrors
Imaging systems
Modulation transfer functions
Infrared imaging
Optical design
Distortion
Sensors
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