Optical Design Study in the 1-5μm Spectral Band with Gradient-Index Materials

Peter McCarthy; Rebecca Berman; Daniel J. L. Williams; Anthony Yee; Duncan T. Moore

doi:10.1117/12.2072692

17 December 2014 Optical design study in the 1-5μm spectral band with gradient-index materials

Peter McCarthy, Rebecca Berman, Daniel J. L. Williams, Anthony Yee, Duncan T. Moore

Proceedings Volume 9293, International Optical Design Conference 2014; 92930X (2014) https://doi.org/10.1117/12.2072692
Event: International Optical Design Conference, 2014, Kohala Coast, Hawaii, United States

Abstract

A design study is conducted in the 1-5μm wavelength band for an F/3, 15 degree full field of view, 38mm focal length imaging system. A survey of preferred materials shows the chromatic properties of homogeneous materials in different regions of this spectrum. A survey of GRIN materials, including zinc selenide zinc sulfide GRIN, aluminum oxynitride GRIN, and chalcogenide GRIN, expands the available chromatic properties in this spectral band. Baseline homogeneous triplet designs are explored and compared to previous studies in the literature. The inclusion of a GRIN material in the three element design improves the chromatic correction and results in a system that is nearly diffraction-limited. The three element design is reduced to two elements, where both elements are GRIN, while maintaining comparable performance to the homogeneous triplet.

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Peter McCarthy, Rebecca Berman, Daniel J. L. Williams, Anthony Yee, and Duncan T. Moore "Optical design study in the 1-5μm spectral band with gradient-index materials", Proc. SPIE 9293, International Optical Design Conference 2014, 92930X (17 December 2014); https://doi.org/10.1117/12.2072692

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KEYWORDS

GRIN lenses

Lens design

Colorimetry

Chalcogenides

Chemical elements

Glasses

Gradient-index optics

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