Cal Sensors is the leading manufacturer of standard and customized lead selenide (PbSe) and lead sulfide (PbS) infrared detectors, infrared arrays, and infrared emitters. The detectors are sensitive in the 1-5.5 micron wavelength region and are used in spectroscopic, imaging, medical, automotive exhaust, gas detection and moisture analysis instruments, non-contact temperature measurement, flame detection and combustion control.