Sensor  Model Heimann PE array ULIS  Mb Uncooled ULIS Mb Uncooled ULIS Mb Uncooled
Sensor (Pixels) 64×62 80×80 160×120 240×240
Spatial resolution 3.9×4(mm2) 3.12×3.12(mm2) 1.56×2.08(mm2) 1.04×1.04(mm2)
Table 1: Spatial resolution of thermal image sensors for 25*25cm2.