IMAGE DISTORTION CORRECTION METHOD, DISTORTION CORRECTION PROGRAM, AND OPTICAL DEVICE

摘要

It is possible to provide a distortion correction method, a distortion correction program, and an optical device capable of effectively correcting distortion while suppressing an information amount of the distortion correction information. For this, the distortion correction method includes: a step for expressing a distortion aberration of an optical system for imaging as a function of the lens position and preparing information on its coefficient as the optical system distortion correction information in advance; and a step for correcting the distortion of an image captured by the optical system according to the lens position upon imaging and the prepared distortion correction information. In the preparation step, the coefficient is optimized (S11 to S15) so as to appropriately control a residual aberration at least two lens positions.