US 8,711,272 B2 · Image stabilization apparatus and image pickup apparatus

Abstract

An image stabilizer has a shooting optical system shooting an object whose principal point moves between first and second principal points in an optical axis direction, an acceleration detector detecting acceleration applied to the image stabilizer and disposed between the first and second principal points in the optical axis direction. An angular velocity detector detecting angular velocity applied to the image stabilizer, an acceleration detector disposed between principal points for proximity and infinity shootings and detecting acceleration applied to the image stabilizer, a rotation angular velocity calculator calculating rotation angular velocity component around the principal point of the shooting optical system based on the angular velocity detector, a revolution angular velocity calculator calculating revolution angular velocity component around the object based on the acceleration detector and the rotation angular velocity calculator, and a controller performing image stabilization control based on a difference between the rotation and revolution angular velocity components.

Claims16

Dependent claims

An image stabilization apparatus, comprising:

a shooting optical system that shoots an object, in which a principal point of the shooting optical system moves to a second principal point position from a first principle position in an optical axis direction of the shooting optical system;
an acceleration detector that detects an acceleration which is applied to the image stabilization apparatus and outputs the acceleration and is disposed between the first principal point position and the second principal point position in the optical axis direction of the shooting optical system;
an angular velocity detector that detects an angular velocity applied to the image stabilization apparatus and outputs the angular velocity;
a calculation unit that calculates a position of the principal point in the shooting optical system;
and
a controlling unit that performs image stabilization control based on the angular velocity detected by the angular velocity detector, the acceleration detected by the acceleration detector, and the position of the principal point calculated by the calculation unit.

3 more elements

An image stabilization apparatus, comprising:

a shooting optical system that shoots an object;
an angular velocity detector that detects an angular velocity applied to the image stabilization apparatus and outputs the angular velocity;
an acceleration detector that detects an acceleration applied to the image stabilization apparatus and outputs the acceleration, the acceleration detector being disposed between a principal point position in a case of proximity shooting and a principal point position in a case of infinity shooting of the shooting optical system;
a rotation angular velocity calculation unit that calculates a rotation angular velocity component around the principal point of the shooting optical system based on an output of the angular velocity detector;
a revolution angular velocity calculation unit that calculates a revolution angular velocity component around the object based on the output of the acceleration detector and an calculation result of the rotation angular velocity calculation unit;
and
a controlling unit that performs image stabilization control based on a difference between the rotation angular velocity component and the revolution angular velocity component.

4 more elements

Dependencies are inferred from the claim text.

Image stabilization apparatus and image pickup apparatus

Life of this patent

Image stabilization apparatus and image pickup apparatus

Life of this patent

Abstract

Claims16