Imaging device and calibration method thereof

A calibration method for an imaging device including a camera module including an imaging element and a lens installed on a path of light incident on the imaging element;

• a blur detection element configured to detect an amount of blur acting on the imaging device;
• and a gravity detection element configured to determine a direction of gravity acting on the imaging device, the calibration method comprising:
• detecting a first angle corresponding to a deviation of a direction of a coordinate axis of the blur detection element with respect to the direction of gravity;
• detecting a second angle corresponding to a deviation of a direction of the camera module with respect to the direction of gravity;
• and
• acquiring a parameter for correcting a detection signal of the blur detection element based on the first angle and the second angle,
• wherein the act of detecting the first angle includes detecting a fourth angle corresponding to a deviation between a direction of a coordinate axis of the gravity detection element and the direction of gravity, and
• wherein the direction of the coordinate axis of the blur detection element and the direction of the coordinate axis of the gravity detection element are set to be parallel to each other, and the fourth angle is set as the first angle.

An imaging device, comprising:

• a camera module including an imaging element and a lens installed on a path of light incident on the imaging element;
• a blur detection element configured to detect an amount of blur acting on the imaging device;
• a gravity detection element configured to determine a direction of gravity acting on the imaging device,
• an actuator configured to displace the lens in a direction perpendicular to an optical axis;
• and
• a position detection element configured to detect a displacement of the lens in the direction perpendicular to the optical axis,
• wherein a position detection signal of the position detection element is corrected so as to eliminate an influence of a deviation in a detection direction of the position detection element with respect to a direction of a pixel axis of the imaging element, and
• wherein calibration is performed by:
• detecting a first angle corresponding to a deviation of a direction of a coordinate axis of the blur detection element with respect to the direction of gravity;
• detecting a second angle corresponding to a deviation of a direction of the camera module with respect to the direction of gravity;
• and
• acquiring a parameter for correcting a detection signal of the blur detection element based on the first angle and the second angle.