Patent ID: 8810698

Claim:
A solid-state image sensor comprising: a semiconductor layer having first and second surfaces, the second surface being opposite to the first surface; a plurality of photosensitive cells, which are arranged two-dimensionally in the semiconductor layer between the first and second surfaces thereof; a first array of micro condenser lenses, which are arranged on the same side as the first surface in order to focus incoming light onto a first group of photosensitive cells that are included in those photosensitive cells to the exclusion of a second group of photosensitive cells that are also included in those photosensitive cells; and a second array of micro condenser lenses, which are arranged on the same side as the second surface in order to focus incoming light onto the second group of photosensitive cells to the exclusion of the first group of photosensitive cells, wherein the second group of photosensitive cells are different from the first group of photosensitive cells; wherein the arrangement pitch of the micro condenser lenses that form the first array is twice as long as that of the pixel regions.