Optical filter comprising transparent support and filter layer having three absorption maximums

摘要

An optical filter comprises a transparent support and a filter layer. The filter layer has at least three absorption maximums in the wavelength region of 750 to 1,100 nm. Each of the three absorption maximums is in the wavelength regions of 750 to 850 nm, 851 to 950 nm, and 951 to 1,100 nm.