Experimental verification of a MWIR/LWIR 3x continuous zoom lens (Rising Researcher Paper)

J. L. Ramsey; G. P. Lindberg; Rick Campbell; J. D. Musgraves; P. F. Wachtel; J. P. Deegan

doi:10.1117/12.2517801

14 May 2019 Experimental verification of a MWIR/LWIR 3x continuous zoom lens (Rising Researcher Paper)

J. L. Ramsey, G. P. Lindberg, Rick Campbell, J. D. Musgraves, P. F. Wachtel, J. P. Deegan

Proceedings Volume 10998, Advanced Optics for Imaging Applications: UV through LWIR IV; 109980M (2019) https://doi.org/10.1117/12.2517801
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

With new detectors that are capable of imaging across multiple wavelength bands, new methods need to be developed to reduce the lens count and improve performance across these multiple bands while minimizing the SWAP-c (Size, Weight, power and cost) of the system. One method that was proposed was using an update to the classical γν-ν diagram. This method which, uses instantaneous Abbe number and minimum dispersion wavelength to select materials that minimize the chromatic and thermal focal shift over the desired spectral region. A MWIR/LWIR lens was designed using this method to minimize the lens count. The lens has a continuous 3x zoom range. The lens was manufactured to determine the validity of the method that was used and to evaluate the new materials that are being developed. A comparison of the nominal design to the manufactured design is discussed. This includes a comparison of MTF performance.

Citation Download Citation

J. L. Ramsey, G. P. Lindberg, Rick Campbell, J. D. Musgraves, P. F. Wachtel, and J. P. Deegan "Experimental verification of a MWIR/LWIR 3x continuous zoom lens (Rising Researcher Paper)", Proc. SPIE 10998, Advanced Optics for Imaging Applications: UV through LWIR IV, 109980M (14 May 2019); https://doi.org/10.1117/12.2517801

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