Distance information detecting device, the distance information detection method, and the camera

摘要

PROBLEM TO BE SOLVED: To provide a distance information detection device achieving an improvement in accuracy of distance information when detecting the distance information of a subject by a phase-difference method even if an error occurs in a base line length.;SOLUTION: The distance information detection device includes: an imaging lens for forming an image of a subject on an imaging plane; a solid-state imaging device for obtaining an image formed by light fluxes having passed through a plurality of different regions of an exit pupil of the imaging lens; and a calculation part for calculating a distance on the basis of signals obtained from the solid-state imaging device. The calculation part has: processing means for obtaining a first signal by using the solid-state imaging device under a first photographic condition; processing means for obtaining a second signal by using the solid-state imaging device under a second photographic condition different from the first photographic condition; and processing means for obtaining the base line length and the distance on the basis of the first and second signals.;COPYRIGHT: (C)2013,JPO&INPIT