An imaging device for photoelectrically converting the return light from the subject, a light source part for generating light of a plurality of wavelength bands that a wavelength band are different from each other, disposed between the light source unit to the imaging device, the light of a specific wavelength band and against and at least one wavelength-selective polarizing element for the light other than the predetermined said specific wavelength band separates the polarized light component does not change the polarization components.被写体からの戻り光を光電変換する撮像素子と、波長帯域が互いに異なる複数の波長帯域の光を発生させる光源部と、光源部から撮像素子までの間に配置され、特定の波長帯域の光に対しては所定の偏光成分を分離し前記特定の波長帯域以外の光に対しては偏光成分を変化させない少なくとも1枚の波長選択型偏光素子とを有する。
