Optical filter and uv pigment

An optical filter comprising:

• a substrate;
• and
• a dielectric multilayer film laid on or above at least one major surface of the substrate, wherein
• the substrate comprises a resin layer,
• the resin layer comprises a transparent resin, a UV dye, and an IR dye that has a maximum absorption wavelength at a wavelength of 650 nm to 800 nm, and
• the UV dye satisfies all of the following characteristics (i-1) to (i-4):
• characteristic (i-1):
• a maximum absorption wavelength is at a wavelength of 340 nm to 375 nm in dichloromethane,
• characteristic (i-2):
• a molar absorption coefficient in dichloromethane is 3.0×104 L/mol·cm or more,
• characteristic (i-3):
• a half-value width at the maximum absorption wavelength of the characteristic (i-1) is 40 nm or less, and
• characteristic (i-4):
• in a spectral transmittance curve measured by dissolving the UV dye in dichloromethane and adjusting a concentration such that a transmittance at the maximum absorption wavelength of the characteristic (i-1) is 10%, an average transmittance at a wavelength of 350 nm to 370 nm is 20% or less.