Optical filter

An optical filter, comprising:

• a near infrared ray absorbing glass,
• dielectric multilayer films laid on or above both major surfaces of the near infrared ray absorbing glass, and
• an absorption layer laid on or above a surface of at least one of the dielectric multilayer films and having a maximum absorption wavelength in a near infrared light region, wherein
• the optical filter satisfies all of the following spectral characteristics (i-1) to (i-5):
• (i-1) in a spectral transmittance curve at a wavelength of 450 nm to 600 nm and an incident angle of 0 degrees, an average transmittance T450-600(0deg)AVE is 60% or more,
• (i-2) in a spectral transmittance curve at a wavelength of 700 nm to 750 nm and an incident angle of 0 degrees, an average transmittance T700-750(0deg)AVE is 5% or less,
• (i-3) in a spectral transmittance curve at a wavelength of 1,050 nm to 1,200 nm and an incident angle of 0 degrees, a maximum transmittance T1050-1200(0deg)MAX is 7% or less,
• (i-4) in a spectral transmittance curve at a wavelength of 800 nm to 1,000 nm and an incident angle of 0 degrees, a maximum transmittance T800-1000(0deg)MAX is 20% or more, and
• (i-5) when a maximum transmittance in the spectral transmittance curve at a wavelength of 450 nm to 600 nm and an incident angle of 0 degrees is T450-600(0deg)MAX;
• in the spectral transmittance curve at an incident angle of 0 degrees, a wavelength λ(70%) at which a transmittance is 70% of T450-600(0deg)MAX and a wavelength/(30%) at which a transmittance is 30% of T450-600(0deg)MAX are included in a range of 600 nm to 700 nm, and
• when the transmittance at the wavelength λ(70%) is T(70%) and the transmittance at the wavelength λ(30%) is T(30%), the following relational expression is satisfied:
• −2≤[T(30%)−T(70%)]/[λ(30%)−λ(70%)]≤−0.75.