Design of an expander lens for an MWIR zoom camera using the third-order aberration analysis

Min-Seok Yun; Tae-Sik Ryu; Sung Chan Park

doi:10.1117/12.2632696

3 October 2022 Design of an expander lens for an MWIR zoom camera using the third-order aberration analysis

Min-Seok Yun, Tae-Sik Ryu, Sung Chan Park

Proceedings Volume 12217, Current Developments in Lens Design and Optical Engineering XXIII; 122170Y (2022) https://doi.org/10.1117/12.2632696
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Conference Poster

Abstract

This study presents the methods for designing an expander lens for an MWIR zoom lens through the third-order aberration analysis and evaluating the optical zoom system. This expander lens is used to enlarge the focal lengths of an original main zoom lens two times, which unfortunately doubles the aperture size of the expander lens elements. Thus, this extended apertures significantly generate the aberrations of a zoom system. To solve the problem, an expander lens has been designed using the third-order aberration analysis numerically. Since an MWIR optical system uses a cooled detector, this zoom system should be designed to eliminate the narcissus effect. Using this design approach, we efficiently obtain an expander lens for an MWIR zoom system satisfying the current requirements.

Citation Download Citation

Min-Seok Yun, Tae-Sik Ryu, and Sung Chan Park "Design of an expander lens for an MWIR zoom camera using the third-order aberration analysis", Proc. SPIE 12217, Current Developments in Lens Design and Optical Engineering XXIII, 122170Y (3 October 2022); https://doi.org/10.1117/12.2632696

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