An imaging apparatus comprising: a lens optical system comprising a lens and a stop; an imaging device comprising at least a first plurality of first pixels and a second plurality of second pixels on which light having passed through the lens optical system is incident, wherein in the imaging device, the at least first plurality of first pixels and second plurality of second pixels are arranged in rows in a row direction, and rows of each of the at least first plurality of first pixels and second plurality of second pixels are arranged alternating with each other in a column direction; and an arrayed optical device arranged between the lens optical system and the imaging device, wherein: the lens optical system further comprises a plurality of areas (D1, D2) arranged in a column direction in a plane vertical to an optical axis; the plurality of areas (D1, D2) comprises at least a first area that transmits therethrough light of a first wavelength band, and a second area that transmits therethrough light of a second wavelength band different from the first wavelength band; and the arrayed optical device makes light having passed through each of the at least first area and second area incident on a respective one of the at least first plurality of first pixels and second plurality of second pixels; and the plurality of areas (D1, D2) is arranged in the vicinity of the stop of the lens optical system, characterized by a first microlens array (Ms) formed on an imaging surface (Ni) of the imaging device, each of the at least first plurality of first pixels and second plurality of second pixels being covered by a microlens of the first microlens array (Ms), and wherein the arrayed optical device is a lenticular lens formed on a surface of the first microlens array (Ms), each individual optical element of the arrayed optical device corresponding to at least two rows of pixels including one row of each of the at least first plurality of first pixels and second plurality of second pixels. a lens optical system comprising a lens and a stop; an imaging device comprising at least a first plurality of first pixels and a second plurality of second pixels on which light having passed through the lens optical system is incident, wherein in the imaging device, the at least first plurality of first pixels and second plurality of second pixels are arranged in rows in a row direction, and rows of each of the at least first plurality of first pixels and second plurality of second pixels are arranged alternating with each other in a column direction; and an arrayed optical device arranged between the lens optical system and the imaging device, wherein: the lens optical system further comprises a plurality of areas (D1, D2) arranged in a column direction in a plane vertical to an optical axis; the plurality of areas (D1, D2) comprises at least a first area that transmits therethrough light of a first wavelength band, and a second area that transmits therethrough light of a second wavelength band different from the first wavelength band; and the lens optical system further comprises a plurality of areas (D1, D2) arranged in a column direction in a plane vertical to an optical axis; the plurality of areas (D1, D2) comprises at least a first area that transmits therethrough light of a first wavelength band, and a second area that transmits therethrough light of a second wavelength band different from the first wavelength band; and the arrayed optical device makes light having passed through each of the at least first area and second area incident on a respective one of the at least first plurality of first pixels and second plurality of second pixels; and the plurality of areas (D1, D2) is arranged in the vicinity of the stop of the lens optical system, a first microlens array (Ms) formed on an imaging surface (Ni) of the imaging device, each of the at least first plurality of first pixels and second plurality of second pixels being covered by a microlens of the first microlens array (Ms), and wherein the arrayed optical device is a lenticular lens formed on a surface of the first microlens array (Ms), each individual optical element of the arrayed optical device corresponding to at least two rows of pixels including one row of each of the at least first plurality of first pixels and second plurality of second pixels.