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Proceedings Paper

Design of the infrared dual-band athermalized optical system based on HDE
Author(s): Keyan Dong; Lianguang Zhang; Jian Wang; Hongliang Wang; Qiang Sun; Zhenwu Lu
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Paper Abstract

A dual-band infrared optical system adopting an uncooled LW infrared detector and a cooled MW infrared detector is designed and manufactured, based on the athermal ability and special diffractive properties of harmonic diffractive elements. The design shows in the MW IR band the F/# is 2 and the focal length is 72 mm, for the temperature range -40 °C ~ 70°C the MTF value is over 0.4 at 20 lp/mm; while in the LW IR band the F/# is 1 and the focal length is 114 mm, for the temperature range -40° ~ 70° the MTF value is over 0.5 at 10 lp/mm. Finite element method is applied to the opto-mechanic structure of the system for thermal analysis, which confirms the imaging ability of the system in a wide temperature range.

Paper Details

Date Published: 5 August 2009
PDF: 9 pages
Proc. SPIE 7383, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications, 73831B (5 August 2009); doi: 10.1117/12.835737
Show Author Affiliations
Keyan Dong, ChangChun Institute of Optics, Fine Mechanics and Physics (China)
Graduate School of the Chinese Academy of Sciences (China)
Lianguang Zhang, Office of PLA 2nd Artillery in Beijing (China)
Jian Wang, ChangChun Institute of Optics, Fine Mechanics and Physics (China)
Hongliang Wang, Office of PLA 2nd Artillery in Beijing (China)
Qiang Sun, ChangChun Institute of Optics, Fine Mechanics and Physics (China)
Zhenwu Lu, ChangChun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 7383:
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications
Jeffery Puschell; Hai-mei Gong; Yi Cai; Jin Lu; Jin-dong Fei, Editor(s)

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