US Patent 7202896 Solid state image pickup device having spectral device

A spectral device is disposed above a semiconductor substrate formed with a number of photoelectric conversion elements. The spectral device has a plurality of spectral regions each corresponding to a plurality of photoelectric conversion elements, each of the spectral regions spectroscopically splitting light fluxes of a plurality of colors necessary for color imaging and contained in incidence light toward different directions, each of the spectroscopically split light fluxes becoming incident upon an associated photoelectric conversion element among the plurality of photoelectric conversion elements corresponding to each of the spectral regions.