Patent ID: 9445017
Filing Date: 2016-09-13
CPC Classification: C03C,C08K,G02B,H04N

Claim Text:
1. A near-infrared cut filter comprising: a near-infrared absorbing glass substrate made of CuO-containing fluorophosphate glass or CuO-containing phosphate glass; and a near-infrared absorbing layer comprising a near-infrared absorbing dye and a transparent resin, and provided on at least one-principal surface of the near-infrared absorbing glass substrate, wherein the near-infrared absorbing film is a resin film in which the near-infrared absorbing dye is dispersed in the transparent resin, and an absorption spectrum of a 400 nm to 850 nm wavelength range of the resin film has a maximum absorption wavelength in a 650 nm to 750 nm wavelength range, wherein in the near-infrared cut filter, an average value of a transmittance in a 400 nm to 550 nm wavelength range is 80% or more, and an average value of a transmittance in a 650 nm to 720 nm wavelength range is 15% or less.