Title:
SHAKE CORRECTION DEVICE, LENS BARREL, AND CAMERA
Document Type and Number:
Japanese Patent JP2018116288
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a shake correction device that allows for reference value correction excellent in accuracy.SOLUTION: According to the present invention 100, a shake correction device 100 correcting tremors of optical members 1B and 6 comprises: an angular velocity sensor 12 that detects angular velocity of the optical members 1B and 6; a reference value computation unit 34 that computes a reference value of an output signal of the angular velocity sensor 12; an imaging element 3 that generates an image signal for each of continuous frames on the basis of input subject image light; a motion vector computation unit 41 that computes a motion vector of an image between the frames on the basis of the image signal; a reference value correction unit 42 that corrects the reference value on the basis of the motion vector; and a target position computation unit 36 that computes a target position of the optical element to be moved for causing the optical members 1B and 6 to perform a shake correction on the basis of the output signal of the angular velocity sensor 12 and the post-corrected reference value. The target position computation unit 36 is configured to, during an exposure of the imaging element 3, compute the target position on the basis of the post-corrected reference value in a pre-exposure.SELECTED DRAWING: Figure 2
Inventors:
MIKAMOTO HIDESHI
Application Number:
JP2018034227A
Publication Date:
July 26, 2018
Filing Date:
February 28, 2018
Export Citation:
Assignee:
NIKON CORP
International Classes:
G03B5/00; G03B15/00; H04N5/232
Domestic Patent References:
| JP2005151542A | 2005-06-09 | |||
| JPH0980500A | 1997-03-28 | |||
| JP2012037778A | 2012-02-23 |
Attorney, Agent or Firm:
Masao Sekiguchi
Takamasa Nakano
Takamasa Nakano