
Proceedings Paper
Athermal achromat lens enabled by polymer gradient index opticsFormat | Member Price | Non-Member Price |
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Paper Abstract
An optical design is shown which provides simultaneous color correction over the visible spectrum and passive thermal
compensation, for an f/4 doublet made of a glass and a polymer gradient index (GRIN) element. The design is enabled
by a new optical model for the thermally varying GRIN element, which incorporates measured material properties from
20-40°C (limited only by the extent of the measured data set). The design is made possible because of the GRIN degrees
of freedom available to the material. A color-corrected doublet is most efficient when there is a large ratio of the
dispersion strength (Abbe number) between the two materials. To make that doublet athermal, however, there needs to
be an equally high ratio between the thermal coefficients. The large ratio of polymer to glass thermal coefficients
presents a unique advantage for GRIN: the effective GRIN dispersion coefficient can have just as large a ratio to the
glass as the thermal coefficients, making for a powerful athermal achromat. To our knowledge, this is the first example
of a polymer GRIN used for simultaneous chromatic and thermal correction.
Paper Details
Date Published: 17 May 2016
PDF: 7 pages
Proc. SPIE 9822, Advanced Optics for Defense Applications: UV through LWIR, 98220S (17 May 2016); doi: 10.1117/12.2224124
Published in SPIE Proceedings Vol. 9822:
Advanced Optics for Defense Applications: UV through LWIR
Jay N. Vizgaitis; Bjørn F. Andresen; Peter L. Marasco; Jasbinder S. Sanghera; Miguel P. Snyder, Editor(s)
PDF: 7 pages
Proc. SPIE 9822, Advanced Optics for Defense Applications: UV through LWIR, 98220S (17 May 2016); doi: 10.1117/12.2224124
Show Author Affiliations
Richard A. Flynn, U.S. Naval Research Lab. (United States)
Guy Beadie, U.S. Naval Research Lab. (United States)
Published in SPIE Proceedings Vol. 9822:
Advanced Optics for Defense Applications: UV through LWIR
Jay N. Vizgaitis; Bjørn F. Andresen; Peter L. Marasco; Jasbinder S. Sanghera; Miguel P. Snyder, Editor(s)
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