Image stabilization control apparatus and imaging apparatus with correction value based on outputs of first and second vibration detection units

摘要

An image stabilization control apparatus including a mechanism which causes a vibration when the mechanism moves is disclosed. The apparatus comprises a vibration correction unit configured to correct image shake occurring due to vibration applied to the image stabilization control apparatus. A correction value of an angular velocity of the vibration is calculated based on signals based on the angular velocity and an acceleration of the vibration, frequency bands of the signals are narrowed. During the mechanism is moving, the image shake is corrected by driving the vibration correction unit based on the angular velocity of the vibration which is corrected by the corrected value calculated before the mechanism moves.

主权项

1. An image stabilization control apparatus comprising:
an imaging optical system; a vibration correction unit configured to correct image shake occurring due to vibration applied to the image stabilization control apparatus; a first vibration detection unit configured to detect the vibration; a second vibration detection unit configured to detect the vibration in a different way from that used by the first vibration detection unit; a calculation unit configured to calculate a correction value based on the outputs of the first and second vibration detection units; and a correction control unit configured to control the movement of the vibration correction unit based on the correction value, wherein, during image capture operations, the correction control unit controls the vibration correction unit based on the correction value calculated before the image capture operations, wherein the first vibration detection unit is an angular velocity meter, wherein the second vibration detection unit is an accelerometer, and wherein the correction value is equivalent to a distance from a position in proximity to a principal point of the imaging optical system to a rotational center of the vibration, the distance being calculated according to a signal based on an output of the angular velocity meter and a signal based on an output of the accelerometer.