Optical filter and imaging device

Provided is an optical filter that has excellent near-infrared light shielding properties, and, in order to suppress, in a wide wavelength range, the incident angle dependence for light incident at a high angle, has a high transmittance of visible light, including blue light, and excellent light resistance as the degree of freedom of a reflective layer design increases. Also provided is an imaging device that uses said optical filter and has excellent color reproducibility. This optical filter comprises: a first near-infrared absorbing dye (D1) and a second near-infrared absorbing dye (D2) that are a squarylium compound of 1 to 3; an absorption layer that contains a transparent resin; and a reflective layer. 1. The dye (D1) has a maximum absorption wavelength λmax (D1) of 680 to 730 nm, and when the transmittance of [lambda] max (D1) is density adjusted to 10%, the difference between [lambda]max (D1) and a wavelength that exhibits a transmittance of 80% on a side having a shorter wavelength than [lambda] max