Patent ID: 8649087

Claim:
An infrared (IR) cut filter to block infrared light, the IR cut filter comprising: an infrared light absorber configured to absorb the infrared light; and an infrared light reflector configured to reflect the infrared light, wherein the infrared light absorber has a light transmission property of 50% transmittance with respect to a wavelength in a wavelength band of 620 nm to 670 nm and 10% to light 40% transmittance with respect to a wavelength of 700 nm, wherein the infrared light reflector has a light transmission property of 50% transmittance with respect to a wavelength in a wavelength band of 670 nm to 690 nm, wherein the wavelength with respect to which the infrared light reflector has the 50% transmittance is longer than the wavelength with respect to which the infrared light absorber has the 50% transmittance, and wherein a combination of the infrared light absorber and the infrared light reflector provides a light transmission property of 50% transmittance with respect to a wavelength in the wavelength band of 620 nm to 670 nm, 20% to 40% transmittance with respect to a wavelength of 675 nm, and less than 5% transmittance with respect to a wavelength of 700 nm.