Imaging device and focusing control method

摘要

An imaging device includes an image pick-up device including phase difference detection pixel pairs, each formed from a pair of phase difference detection pixels respectively having their openings eccentrically formed on opposite sides of a main axis of an imaging lens, and imaging pixel pairs; a reading section that reads out signals from the pixels arrayed in the image pick-up device using a rolling shutter method; a first correlation computation section that performs correlation computation on the signals from the phase difference detection pixel pairs; a second correlation computation section that performs correlation computation on the signals from the imaging pixel pairs; a correction section that corrects a result from the first correlation computation section using a result from the second correlation computation section; and a focusing section that performs focus control using the corrected result.

主权项

1. An imaging device comprising:
an image pick-up device comprising
a plurality of phase difference detection pixel pairs, each formed from a first phase difference detection pixel and a second phase difference detection pixel, each of which forms a pupil-divided image from a subject image that has passed through a first region and a second region of an imaging lens, anda plurality of imaging pixel pairs including a plurality of imaging pixels; a reading section that performs read-out with respect to the image pick-up device by reading signals from the imaging pixels and the phase difference detection pixels arrayed in the image pick-up device using a rolling shutter method; a first correlation computation section that performs correlation computation on the signals that have been read from the phase difference detection pixel pairs; a second correlation computation section that performs correlation computation on the signals that have been read from the imaging pixel pairs; a correction section that corrects a correlation computation result from the first correlation computation section using a correlation computation result from the second correlation computation section; and a focusing section that performs focus control using the corrected correlation computation result.