31 May 2012 Multi-field of view see-spot optics
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Abstract
The increasing availability of sensors that can image in the 1-5 micron region has allowed for systems to be developed that utilize the full spectrum. Past MWIR systems have typically only imaged in the 3-5 micron region, but the new detectors allow imaging in the SWIR and MWIR bands with the same system. The use of a single FPA reduces SWAP and allows the user to see laser rangefinder and laser designator wavelengths. NVESD and Axsys have designed and built a SWIR/MWIR optical system that images in the 1-5 micron band. The optical system utilizes a cooled infrared detector that images in the 3-5 micron band as well as 1.04 - 1.08 and 1.54 microns without having to refocus the system to see the SWIR wavelengths. This provided an optical challenge to design a system that would image from 1-5 microns on the same detector. A combination reflective/refractive design was chosen in order to minimize packaging and meet the different FOV requirements. This paper discusses the design and development of a multi-FOV optical system with the capability to image across the 1-5 micron spectral band utilizing a combination of reflective and refractive components.
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Scott Lilley, Scott Lilley, Jay Vizgaitis, Jay Vizgaitis, Jonathan Everett, Jonathan Everett, Bob Spinazzola, Bob Spinazzola, } "Multi-field of view see-spot optics", Proc. SPIE 8353, Infrared Technology and Applications XXXVIII, 83531Y (31 May 2012); doi: 10.1117/12.924414; https://doi.org/10.1117/12.924414
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