Patent ID: 9641758
Date: 2017-05-02
CPC Classifications: H04N

Claim:
1. An image blur correction apparatus which uses a first optical correction unit and a second optical correction unit to optically correct a blur in an image, wherein an image pickup optical system configured to vary a magnification of an image comprises the first optical correction unit and the second optical correction unit, the image blur correction apparatus comprising: at least one processor or circuit configured to perform the operations of the following units: (a) a vibration detection unit configured to detect vibration information of the image blur correction apparatus to output a vibration signal; (b) a signal separation unit configured to separate the vibration signal into a first vibration signal and a second vibration signal; (c) a first sensitivity correction unit configured to correct an amplitude of the first vibration signal depending on an eccentricity sensitivity of the first optical correction unit, the eccentricity sensitivity of the first optical correction unit varying depending on a focal length; (d) a second sensitivity correction unit configured to correct an amplitude of the second vibration signal depending on an eccentricity sensitivity of the second optical correction unit, the eccentricity sensitivity of the second optical correction unit varying depending on a focal length; (e) a first integration unit configured to integrate an output signal from the first sensitivity correction unit; and (f) a second integration unit configured to integrate an output signal from the second sensitivity correction unit, (g) a first drive unit configured to drive the first optical correction unit based on the integrated signal from the first integration unit; and (h) a second drive unit configured to drive the second optical correction unit based on the integrated signal from the second integration unit.