| 摘要 |
A focus detection device, which detects a defocus amount based on a phase difference between a pair of object images that are obtained by pupil division and projected onto a pair of areas on a line sensor, includes a parallel line sensor having two line sensor arrays arranged adjacently in parallel, and a correction calculator which corrects the defocus amount according to a phase difference between output signals of the two line sensor arrays of the parallel line sensor.
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