Focus adjustment device, imaging device and focus adjustment method
AssigneeNikon Corporation
InventorYosuke KUSAKA
Life of this patent
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Abstract
A focus adjustment device includes 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 through a first pupil division-type image shift detection method, a focus detector that detects a focus adjustment state at the imaging optical system through a second pupil division-type image shift detection method different from the first pupil division-type image shift detection method, 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.
Claims1
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;
- a focus detector that detects a focus adjustment state at 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:
- a range over which the focus adjustment state detected by the focus detector is judged to achieve a focus match is wider than a range over which the focus adjustment state detected by the image sensor is judged to be in focus.
Dependencies are inferred from the claim text.