Design of double-group IR zoom lens

Nanxi Wang; Bo Zhang; Xiaobai Jiang; Yuan Li; Wenli Kang; Yulan He; Hua Qiang

doi:10.1117/12.2199673

8 October 2015 Design of double-group IR zoom lens

Nanxi Wang, Bo Zhang, Xiaobai Jiang, Yuan Li, Wenli Kang, Yulan He, Hua Qiang

Proceedings Volume 9677, AOPC 2015: Optical Test, Measurement, and Equipment; 96771E (2015) https://doi.org/10.1117/12.2199673
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

A 15× double-group linkage zoom lens was presented based on the 640×512 cooled FPA. Having two alternate components linked and moved together, double-group zoom structure has smoother cam curve, so the displacement of all components are smaller and the total length is shorter. The focal length rang is 30~450mm and wavelength is 3.7~4.8μm, F number is 4. This lens was placed at cold shield and 100% cold shield efficiency had reached. Moreover, detailed design and image quality were given by CODE V® optical software. After analysis, MTF approaches diffraction limit. The results show that this optical system has large zoom ratio, and excellent image quality.

Citation Download Citation

Nanxi Wang, Bo Zhang, Xiaobai Jiang, Yuan Li, Wenli Kang, Yulan He, and Hua Qiang "Design of double-group IR zoom lens", Proc. SPIE 9677, AOPC 2015: Optical Test, Measurement, and Equipment, 96771E (8 October 2015); https://doi.org/10.1117/12.2199673

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