Design of a high-resolution high-magnification MWIR continuous zoom lens system

Thanh Dat Vu; Xuan Du Dang; Dat Nguyen-Van

doi:10.1117/12.2601778

9 October 2021 Design of a high-resolution high-magnification MWIR continuous zoom lens system

Thanh Dat Vu, Xuan Du Dang, Dat Nguyen-Van

Proceedings Volume 11895, Optical Design and Testing XI; 118950R (2021) https://doi.org/10.1117/12.2601778
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

This paper reports a design of a high magnification mid-wave infrared (MWIR) continuous zoom lens system that is compatible with a high-resolution focal plane array (FPA). The zoom lens design has been developed via a series of optimization processes, from a global search to look for potential design candidates, to different local optimization strategies to balance out optical aberrations between different zoom configurations, then comes a few minor adjustments in order to mitigate the negative effects that the optical system might encounter during its operation. By using these processes, an F/5.5 continuous zoom lens system with a magnification ratio of 22x that works with an SXGA (1280 x 1024) cooled detector having a pixel pitch of 15 μm has been successfully designed. This zoom lens system only makes use of two movable lenses to maintain its performance throughout the entire zoom range. With a maximum focal length of 1200 mm, this optical system plays a major role in extremely long-range observation and surveillance applications.

Conference Presentation

Citation Download Citation

Thanh Dat Vu, Xuan Du Dang, and Dat Nguyen-Van "Design of a high-resolution high-magnification MWIR continuous zoom lens system", Proc. SPIE 11895, Optical Design and Testing XI, 118950R (9 October 2021); https://doi.org/10.1117/12.2601778

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