NASA NTRS · 19930048846
640 x 480 MWIR and LWIR camera system developments
Abstract
The performance of a 640 x 480 PtSi, 3,5 microns (MWIR), Stirling cooled camera system with a minimum resolvable temperature of 0.03 is considered. A preliminary specification of a full-TV resolution PtSi radiometer was developed using the measured performance characteristics of the Stirling cooled camera. The radiometer is capable of imaging rapid thermal transients from 25 to 250 C with better than 1 percent temperature resolution. This performance is achieved using the electronic exposure control capability of the MOS focal plane array (FPA). A liquid nitrogen cooled camera with an eight-position filter wheel has been developed using the 640 x 480 PtSi FPA. Low thermal mass packaging for the FPA was developed for Joule-Thomson applications.
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Tower, J. R., Villani, T. S., Esposito, B. J., Gilmartin, H. R., Levine, P. A., Coyle, P. J., Davis, T. J., Shallcross, F. V., Sauer, D. J., Meyerhofer, D.. 1992-01-01. 640 x 480 MWIR and LWIR camera system developments. https://ntrs.nasa.gov/citations/19930048846
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