Filters are categorized by the length of the spectrum (i.e., the region in which the spectrum is located) into: ultraviolet filters, visible filters, near-infrared filters, mid-infrared filters, and far-infrared filters.
Spectral wavelength range:
UV Filter 1-380nm
Visible Filter 380-780nm
Near Infrared Filter 780-1500nm
Infrared filters 1500nm-10μm or more
