US 11,962,904 B2
Image blur correction device, imaging device, and lens device
Kouhei Awazu, Saitama (JP); Yasuhiro Miwa, Saitama (JP); and Takuro Abe, Saitama (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Sep. 20, 2021, as Appl. No. 17/479,488.
Application 17/479,488 is a continuation of application No. PCT/JP2020/015528, filed on Apr. 6, 2020.
Claims priority of application No. 2019-084504 (JP), filed on Apr. 25, 2019.
Prior Publication US 2022/0006958 A1, Jan. 6, 2022
Int. Cl. H04N 5/335 (2011.01); G02B 27/64 (2006.01); H04N 23/68 (2023.01); G01R 33/07 (2006.01); G01R 33/09 (2006.01); G03B 5/02 (2021.01)
CPC H04N 23/687 (2023.01) [G02B 27/646 (2013.01); G01R 33/072 (2013.01); G01R 33/091 (2013.01); G03B 5/02 (2013.01); G03B 2205/0007 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An image blur correction device that corrects blur of an image formed in an imaging element by an imaging optical system, the image blur correction device comprising:
a movable mechanism to which an optical component included in the imaging element or the imaging optical system is fixed;
a support mechanism that supports the movable mechanism to be movable in a first direction perpendicular to an optical axis of the imaging optical system; and
a first drive mechanism that generates thrust of moving the movable mechanism in the first direction,
wherein the first drive mechanism includes a first magnetic force generator that is fixed to one mechanism of the support mechanism and the movable mechanism and in which a direction connecting both magnetic poles is parallel to the first direction, and a first coil that is fixed to the other mechanism of the support mechanism and the movable mechanism to face the first magnetic force generator,
in a state in which the movable mechanism is at a reference position where the optical axis of the imaging optical system coincides with a center of the imaging element, a position in the first direction of a center between both magnetic poles of the first magnetic force generator and a central axis of winding of the first coil deviate from each other,
the first coil is fixed at a position in the movable mechanism different from the imaging element or the optical component fixed to the movable mechanism in the first direction,
the first magnetic force generator is fixed to the support mechanism,
in a state in which the movable mechanism is at the reference position, the central axis of the winding of the first coil is positioned on a side of the imaging element or the optical component fixed to the movable mechanism with respect to the center between both magnetic poles of the first magnetic force generator, in the first direction, and
a position in the first direction of an end portion in the first magnetic force generator, on a side in a direction from the central axis of the winding of the first coil toward the center between both magnetic poles of the first magnetic force generator in the first direction, coincides with a position in the first direction of an end portion in a region through which a movable body consisting of a member fixed to the movable mechanism and the movable mechanism is capable of passing, on the side in the direction from the central axis of the winding of the first coil toward the center between both magnetic poles of the first magnetic force generator in the first direction.