Most of the present infrared gas and optical flame detectors traditionally make use of MWIR single point sensors rather than imaging sensors; this is mainly due to the lack of affordable imaging sensing technologies in this band of the infrared spectrum. However, the appearance of uncooled imaging MWIR sensors made of VPD PbSe, with spectral detection range from 1 to 5 microns, opens the possibility to incorporate these sensors into gas and flame detection systems to allow area monitoring.
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Rodrigo Linares, Germán Vergara, Raúl Gutiérrez, Carlos Fernández, Víctor Villamayor, Luis Gómez, María González-Camino, Arturo Baldasano, "Gas and flame detection and identification using uncooled MWIR imaging sensors," Proc. SPIE 9485, Thermosense: Thermal Infrared Applications XXXVII, 94851F (12 May 2015);