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Proceedings Paper

Multiband optics for imaging systems (Conference Presentation)
Author(s): Jasbinder S. Sanghera; Daniel J. Gibson; Shyam S. Bayya; Vinh Q. Nguyen; Mikhail Kotov; Collin McClain
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Paper Abstract

There is a strong desire to reduce size and weight of single and multiband IR imaging systems in Intelligence, Surveillance and Reconnaissance (ISR) operations on hand-held, helmet mounted or airborne platforms. NRL is developing new IR glasses that 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 to enable lamination and co-molding of the optics which leads to a reduction in the number of air-glass interfaces (lower Fresnel reflection losses). Our multispectral optics designs using these new materials demonstrate reduced size, complexity and improved performance. This presentation will cover discussions on the new optical materials, multispectral designs, as well fabrication and characterization of new optics. Additionally, graded index (GRIN) optics offer further potential for both weight savings and increased performance but have so far been limited to visible and NIR bands (wavelengths shorter than about 0.9 µm). NRL is developing a capability to extend GRIN optics to longer wavelengths in the infrared by exploiting diffused IR transmitting chalcogenide glasses. These IR-GRIN lenses are compatible with all IR wavebands (SWIR, MWIR and LWIR) and can be used alongside conventional materials. The IR-GRIN lens technology, design space and anti-reflection considerations will be presented in this talk.

Paper Details

Date Published: 8 December 2016
PDF: 1 pages
Proc. SPIE 9988, Electro-Optical Remote Sensing X, 99880G (8 December 2016); doi: 10.1117/12.2240857
Show Author Affiliations
Jasbinder S. Sanghera, U.S. Naval Research Lab. (United States)
Daniel J. Gibson, U.S. Naval Research Lab. (United States)
Shyam S. Bayya, U.S. Naval Research Lab. (United States)
Vinh Q. Nguyen, U.S. Naval Research Lab. (United States)
Mikhail Kotov, Sotera Defense Solutions, Inc. (United States)
Collin McClain, Univ. Research Foundation (United States)


Published in SPIE Proceedings Vol. 9988:
Electro-Optical Remote Sensing X
Gary Kamerman; Ove Steinvall, Editor(s)

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