The infrared band includes a wide range of wavelengths, from 780nm to 14um, which is divided into near infrared, mid infrared and far infrared. Near infrared (code-named IR-A, wavelength 780 ～ 1500nm, NIR), Mid-infrared (IR-B, 1500 ～ 6000nm, MIR), Far infrared (IR-C, 6000 ～ 14000nm, FIR).

Infrared Filters Applications: 
security monitoring, 
infrared gas analyzers, 
night vision products, 
infrared detectors, 
infrared receivers, 
infrared sensors, 
infrared communication products,
infrared curtain wall products, 
infrared sensor toilets, 
surveillance cameras, 
remote controls,
faucets, 
hand sanitizer devices, 
infrared thermometers, 
infrared printers, 
infrared touch screens, 
electronic whiteboards, 
fingerprint recognition machines, 
face recognition systems.