Spectral sensitivity
Is a parameter describing how efficiently light intensity is registered at different wavelengths.
Machine vision systems, usually based on CCD or CMOS cameras, detect light from 350 to 900 nm, with the peak zone being between 400 and 650 nm.
Different kinds of sensors can also cover the UV spectrum or, on the opposite side, Near Infrared Light, before going to drastically different technology for far wavelengths such as SWIR or LWIR.
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