Optical filter and imaging device

An optical filter, comprising:

• an absorption layer comprising a near-infrared absorbing dye and a transparent resin;
• and
• a dielectric multilayer film,
• wherein the optical filter satisfies that an average transmittance T850-1,100ave0° of light having a wavelength of 850 to 1,100 nm at an incident angle of 0 degree is 0.02% or less, an average transmittance T435-630ave0° of light having a wavelength of 435 to 630 nm at an incident angle of 0 degree is 70% or more, an average transmittance T850-1,100ave30° of light having a wavelength of 850 to 1,100 nm at an incident angle of 30 degree is 1% or less, a maximum transmittance T850-1,100max30° of light having a wavelength of 850 to 1,100 nm at an incident angle of 30 degree is 2% or less, and an average value of absolute values of differences in transmittances in spectral transmittance curves at an incident angle of 0 degree and an incident angle of 30 degrees is 1.5%/nm or less in a wavelength range of 615 to 725 nm.