A color filter has a transmission band in a visible region and an infrared region. A first substrate is arranged below the color filter and has a first photoelectric conversion element which outputs a first signal charge according to an amount of exposure of a light passing through the color filter. A second substrate has a second photoelectric conversion element outputting a second signal charge according to an amount of exposure of a light, having sensitivity in at least the infrared region, which passes through the first substrate, and is arranged on a surface on an opposite side to a light-receiving surface of the first substrate. A signal read-out circuit reads out the first signal charge as a first electrical signal, and reads out the second signal charge as a second electrical signal.
