Title:
CONTROL DEVICE, IMAGING DEVICE, CONTROL METHOD, PROGRAM, AND STORAGE MEDIUM
Document Type and Number:
Japanese Patent JP2017219791
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a control device that can perform accurate focus detection even when asymmetric optical vignetting occurs.SOLUTION: A control device comprises: acquisition means (169a) that acquires a first signal and a second signal corresponding to luminous fluxes passing through pupil areas different from each other in an imaging optical system; correction means (166) that corrects base length information on the basis of exit pupil information according to a focus detection position; and calculation means (169b) that calculates the amount of defocus on the basis of the amount of image shift obtained from the value of correlation between the first signal and second signal and the corrected base length information.SELECTED DRAWING: Figure 1
Inventors:
NISHIO TERUHIRO
Application Number:
JP2016116021A
Publication Date:
December 14, 2017
Filing Date:
June 10, 2016
Export Citation:
Assignee:
CANON KK
International Classes:
G02B7/34; G02B7/28; G03B13/36; H04N5/232; H04N5/369; H04N5/374
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya
Atsushi Mizumoto
Hirayama Tomoya