| 摘要 |
A focus detection device includes: an image sensor which is provided with a plurality of focus -detection pixel lines having a plurality of focus- detection pixels each of said plurality of focus- detection pixel lines outputting a pair of focus- detection signals; a spatial integration unit which integrates the pairs of focus detection signals outputted respectively by focus- detection pixel lines of a first prescribed number from among the plurality of focus detection pixel lines, and calculates a spatial integration value; and a focus detection unit which detects a focus state of an optical system on the basis of the spatial integration value. |
