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Proceedings Paper

New moldable glasses for multispectral optics (Conference Presentation)
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Paper Abstract

There is a strong desire to reduce size and weight of single and multiband IR imaging systems in ISR operations on hand-held, helmet mounted or airborne platforms. NRL is developing new IR glasses that transmit from 0.9 to < 12 µm in wavelength, with refractive index ranging from 2.38 to 3.17, to expand the glass map and provide compact solutions to multispectral imaging systems. These glasses were specifically designed to have comparable glass molding temperatures and thermal properties so that they can be laminated and co-molded into optics with reduced number of air-glass interfaces (lower Fresnel reflection losses). These new NRL glasses also have negative or very low dn/dT, making it easier to athermalize the optical system. Our multispectral optics designs using these new materials demonstrate reduced size, complexity and improved performance. The glass database is now available for distribution. Some of the NRL glasses are also available commercially. This presentation will cover discussions on the new optical materials, multispectral designs, as well fabrication and characterization of new optics.

Paper Details

Date Published: 17 September 2018
Proc. SPIE 10743, Optical Modeling and Performance Predictions X, 1074309 (17 September 2018); doi: 10.1117/12.2321177
Show Author Affiliations
Shyam S. Bayya, U.S. Naval Research Lab. (United States)
Daniel Gibson, U.S. Naval Research Lab. (United States)
Vinh Nguyen, U.S. Naval Research Lab. (United States)
Jasbinder Sanghera, U.S. Naval Research Lab. (United States)
Mikhail Kotov, KeyW Corp. (United States)
Collin McClain, Univ. Research Foundation (United States)
Jay Vizgaitis, optX Imaging Systems (United States)

Published in SPIE Proceedings Vol. 10743:
Optical Modeling and Performance Predictions X
Mark A. Kahan; Marie B. Levine-West, Editor(s)

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