Patent ID: 9048152
Filing Date: 2015-06-02
Classification: G02B,H01L,H04N

Abstract:
1. An image pickup apparatus comprising: an image sensor configured to include plural pixels to photoelectrically convert paired object images, the pixels being two-dimensionally arranged; a signal producing part configured to produce paired image signals corresponding to the paired object images; and a calculating part configured to calculate a defocus amount, wherein the calculating part is configured to shift the paired image signals relatively in a first direction, configured to produce a plurality of first correlation data showing change of a correlation value of the paired image signals according to their relative shift amount in the first direction, the plurality of first correlation data corresponding to a plurality of areas in the image sensor, configured to combine the plurality of first correlation data in a second direction different from the first direction for producing second correlation data, and configured to calculate the defocus amount from the second correlation data.