4 March 2015 Optical design of athermalization stepping-zoom dual FOV MWIR system
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Proceedings Volume 9521, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part I; 952115 (2015) https://doi.org/10.1117/12.2176046
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held August-October 2014, 2014, China, China
Abstract
According to the athermalization theory a optical passive athermalization stepping-zoom dual FOV MWIR system in 3μm~5μm designed in this paper, Through the rational combination of infrared optical materials and aspheric surface realized the design of optical passive athermalization. The optical system only use five lens and the optical materials is commonly such as germanium, silicon and Znse. The focal length is 90mm/150mm, the total length is 139mm. The MTF of the two fields are ≥0.5@16lp/mm at -45°C~+60°C, which shows its optical performance approximates to the diffraction limit.
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Ping Du, Ping Du, Cui-ling Zhao, Cui-ling Zhao, Yaguang Geng, Yaguang Geng, Tao Ma, Tao Ma, } "Optical design of athermalization stepping-zoom dual FOV MWIR system", Proc. SPIE 9521, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part I, 952115 (4 March 2015); doi: 10.1117/12.2176046; https://doi.org/10.1117/12.2176046
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