Patent ID: 10408979

Abstract:
Provided is an optical filter, which includes a light-absorbing layer and a light-reflecting layer and satisfies the following requirements: (i) in a spectral transmittance curve at an incident angle of 0°, an average transmittance over the 430-620 nm wavelength range is ≥80%, an average transmittance over the 430-450 nm wavelength range is ≥76%, an average transmittance over the 735-1100 nm wavelength range is ≤5%, and an average transmittance over the 350-395 nm wavelength is ≤5%; and (ii) there is a wavelength λ0(UV) with transmittance of 50% in the 400-425 nm wavelength range in the spectral transmittance curve at the incident angle of 0°, there is a wavelength λ30(UV) with transmittance of 50% in the 400-425 nm wavelength range in a spectral transmittance curve at an incident angle of 30°, and an absolute value of a difference between the wavelengths, |λ0(UV)−λ30(UV),| is ≤5 nm.