Mechanically compensated type for midwave infrared zoom system with a large zoom ratio

Hao Zhou; Liu Ying; Sun Qiang; Li Chun; Xiaolong Zhang; Huang Jianbo

doi:10.1117/1.OE.52.1.013002

7 January 2013 Mechanically compensated type for midwave infrared zoom system with a large zoom ratio

Hao Zhou, Liu Ying, Sun Qiang, Li Chun, Xiaolong Zhang, Huang Jianbo

Author Affiliations +

Optical Engineering, Vol. 52, Issue 1, 013002 (January 2013). https://doi.org/10.1117/1.OE.52.1.013002

Abstract

In some circumstances, there is a need for a midwave infrared (MWIR) zoom system with a large zoom ratio. Using traditional four-component mechanically compensated types of MWIR zoom systems cannot achieve a large zoom ratio. To meet this demand, we describe a six-component mechanically compensated type. The thin-lens theory of this type is developed and equations are presented. Using the six-component mechanically compensated type, a MWIR continuous zoom system with a zoom ratio of 45 is designed, and it has high image quality over the entire zoom range.

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Hao Zhou, Liu Ying, Sun Qiang, Li Chun, Xiaolong Zhang, and Huang Jianbo "Mechanically compensated type for midwave infrared zoom system with a large zoom ratio," Optical Engineering 52(1), 013002 (7 January 2013). https://doi.org/10.1117/1.OE.52.1.013002

Published: 7 January 2013

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