US 9,813,627 B2
Image shake correcting apparatus and its control method, lens barrel, optical equipment, and imaging apparatus
Nobushige Wakamatsu, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 28, 2014, as Appl. No. 14/341,947.
Claims priority of application No. 2013-165488 (JP), filed on Aug. 8, 2013.
Prior Publication US 2015/0042828 A1, Feb. 12, 2015
Int. Cl. H04N 5/232 (2006.01)
CPC H04N 5/23258 (2013.01) [H04N 5/23254 (2013.01); H04N 5/23287 (2013.01); H04N 5/23296 (2013.01); G03B 2217/005 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An image shake correcting apparatus, comprising:
a shake detecting unit configured to detect shake of an apparatus containing an imaging optical system;
a calculating unit configured to calculate image shake correction amount by acquiring a shake detection signal output from the shake detecting unit; and
a shake correcting unit configured to correct an image shake in accordance with the image shake correction amount calculated by the calculating unit;
wherein the calculating unit calculates an imaging magnification of the imaging optical system, and calculates the image shake correction amount by calculating a first correction amount before change of a frequency range of a correction filter and calculates the image shake correction amount by a second correction amount after change of the frequency range of the correction filter, in accordance with a size of the imaging magnification.