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Application of fluoride crystal glass in designing a long-wave infrared athermalized zoom optical system
Author(s): Binpeng Shen; Zinan Wang; Chenzhong Zhang; Junhe Meng
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Paper Abstract

In this paper, a long wave infrared continuous zoom optical system is designed based on 640×512 element cooled detector. By using fluoride crystal and chalcogenide glass to design the passive athermalized optical system, the operating temperature range of the optical system can meet the requirements of -40~60℃.The spectral wave band of the system is 7.7μm~9.5μm with F# is 3. It can realize 30mm ~150mm continuous zoom. When considering athermalization of infrared optical system, the fluoride crystal glass, the chalcogenide glass and the other infrared materials are matched reasonably. And three athermalized schemes are designed in this paper. By comparing the three design schemes, it can be concluded that the addition of fluoride material to the long wave continuous zoom system is beneficial to the realization of passive athermalized design.

Paper Details

Date Published: 18 December 2019
PDF: 9 pages
Proc. SPIE 11338, AOPC 2019: Optical Sensing and Imaging Technology, 113382U (18 December 2019); doi: 10.1117/12.2547804
Show Author Affiliations
Binpeng Shen, Tianjin Jinhang Institute of Technical Physics (China)
Zinan Wang, Tianjin Jinhang Institute of Technical Physics (China)
Chenzhong Zhang, Tianjin Jinhang Institute of Technical Physics (China)
Junhe Meng, Tianjin Jinhang Institute of Technical Physics (China)


Published in SPIE Proceedings Vol. 11338:
AOPC 2019: Optical Sensing and Imaging Technology
John E. Greivenkamp; Jun Tanida; Yadong Jiang; HaiMei Gong; Jin Lu; Dong Liu, Editor(s)

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