By the length of the spectrum (i.e., the region where the spectrum is located), the filters are divided into: ultraviolet filters, visible light filters, near-infrared filters, mid-infrared filters, and far-infrared filters.
Spectral Wavelength Range:
Ultraviolet Filter Lenses 180~400nm
Visible Light Filters 400-700nm
Near-Infrared Filter 700~3000nm
Infrared filter 3000nm to over 10um