1. An imaging device comprising: a plurality of lenses arranged in the same plane; and a plurality of imaging regions for respectively receiving a plurality of subject images formed by the plurality of lenses; wherein vertical line directions and horizontal line directions of a pixel arrangement in the respective plurality of imaging regions are equal to one another among the plurality of imaging regions, and at least one pair of subject images received by at least one pair of imaging regions having a parallax in the vertical line direction among the plurality of imaging regions are shifted from each other by a predetermined amount in the horizontal line direction.