Patent ID: 8350953

Claim:
An image pickup apparatus comprising: a photoelectric conversion cell group in which, a plurality of photoelectric conversion cells which convert an optical image formed by an optical system to an electrical signal, are arranged two-dimensionally, wherein at least some photoelectric conversion cells from among the plurality of photoelectric conversion cells are formed to output an image signal and a signal for ranging, and areas of a photoelectric conversion regions of photoelectric conversion cells which output the image signal, including the photoelectric conversion cells which output the image signal and the signal for ranging having the same light-receiving spectral sensitivity, in the photoelectric conversion cell group are substantially same, and the photoelectric conversion cells are arranged such that, for at least two photoelectric conversion cells which are necessary for ranging, a distance between centers of gravity of areas of the photoelectric conversion regions of the photoelectric conversion cells which output the image signal and the signal for ranging differs from a distance between centers, which is calculated from a pixel pitch, wherein the areas are substantially same means the areas satisfy the following conditional expression (1) 0.9 <SA/LA≦ 1 (1) where, LA denotes an area of the largest photoelectric conversion region of a photoelectric conversion cell having a light-receiving spectral sensitivity A, in the photoelectric conversion cell group, and SA denotes an area of the smallest photoelectric conversion region of the photoelectric conversion cell having the light-receiving spectral sensitivity A, in the photoelectric conversion cell group.