IMAGE PICKUP DEVICE, DIGITAL PHOTOGRAPHING APPARATUS USING THE IMAGE PICKUP DEVICE, AUTO-FOCUSING METHOD, AND COMPUTER-READABLE MEDIUM FOR PERFORMING THE AUTO-FOCUSING METHOD

摘要

An image pickup device is provided including a plurality of pixels arranged over an entire region of the image pickup device, each pixel including: a plurality of light-receiving sub-pixels that generate an image pickup signal from incident light; and a phase-difference detection sub-pixel having a confined light-receiving region. The plurality of pixels includes first group pixels and second group pixels that are each classified according to an arrangement of the confined light-receiving region of the phase-difference detection sub-pixel thereof, and the confined light-receiving region of the phase-difference detection sub-pixel of the first group pixels and the confined light-receiving region of the phase-difference detection sub-pixel in the second group pixels are arranged biased to opposite directions.