Infrared Technology Infrared is part of the electromagnetic spectrum including wavelengths from .7um to 14um. Near infrared (NIR) is that part of the spectrum that includes wavelengths from .7um to 1.4um. Short infrared (SWIR), Mid infrared (MWIR), Far infrared (FWIR) are also part of this infrared spectrum.
Near Infrared (NIR) wavelengths are commonly referred to as “infrared” technology. As early as WWII, Night Vision Goggles, commonly called “NVG’s”, were introduced to the military to identify Near infrared wavelengths. While technology has caught up with the ability to detect Mid and Far infrared, the “IR” term, although not technically correct, refers to NEAR infrared only.
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