Patent ID: 7792420
Filing Date: 2010-09-07
Classification: G02B,G03B,H04N

Abstract:
1. A focus adjustment device, comprising: an image sensor that includes imaging pixels for capturing an image formed via an imaging optical system and focus detection pixels for detecting a focus adjustment state at the imaging optical system based upon a shift amount between a pair of images formed with light fluxes passing through a pair of areas on a pupil of the imaging optical system; a focus detector that detects a focus adjustment state at the imaging optical system based upon a shift amount between a pair of images formed with light fluxes passing through a pair of areas on a pupil of the imaging optical system; and a focus adjustment controller that executes focus adjustment for the imaging optical system based upon the focus adjustment states detected by the image sensor and the focus detector, wherein: an opening angle formed by lines each connecting a focus detection position set at a predetermined image plane of the imaging optical system and a gravitational center of one of the pair of areas corresponding to subject light fluxes detected by the image sensor is greater than an opening angle formed by lines each connecting the focus detection position and a gravitational center of one of the pair of areas corresponding to subject light fluxes detected by the focus detector.