The imaging device includes a light dividing unit, a first imaging unit, a second imaging unit, and a calculation unit. The light dividing unit divides first light from the subject into second light and third light. The first light includes the second light and the third light. The second light includes infrared light and at least one of green light and blue light. The third light includes red light. The third light may include the green light. The first imaging unit has a first light receiving region and a second light receiving region. The first light receiving region generates at least one of a B signal based on the blue light and a G signal based on the green light. The second light receiving region generates an IR signal based on the infrared light. The second light receiving region may generate the G signal. The arithmetic unit generates a visible light image signal from the R signal, the G signal, and the B signal, and generates an infrared light image signal from the IR signal.撮像装置は、光分割部と、第１の撮像部と、第２の撮像部と、演算部とを有する。前記光分割部は、被写体からの第１の光を第２の光と第３の光とに分割する。前記第１の光は前記第２の光と前記第３の光とを含む。前記第２の光は、赤外光と、緑色光および青色光の少なくとも１つとを含む。前記第３の光は赤色光を含む。前記第３の光は前記緑色光を含みうる。前記第１の撮像部は、第１の受光領域と第２の受光領域とを有する。前記第１の受光領域は、前記青色光に基づくＢ信号と、前記緑色光に基づくＧ信号との少なくとも１つを生成する。前記第２の受光領域は、前記赤外光に基づくＩＲ信号を生成する。前記第２の受光領域は、前記Ｇ信号を生成しうる。前記演算部は、前記Ｒ信号と、前記Ｇ信号と、前記Ｂ信号とから可視光画像信号を生成し、前記ＩＲ信号から赤外光画像信号を生成する。
