Method for adjusting image pickup device and image pickup device

A method for adjusting an image pickup device, the image pickup device comprising:

• an image pickup optical system for forming a subject image;
• an image pickup element arranged at an image-forming position of the image pickup optical system and comprising an image pickup surface, for picking up the subject image formed on the image pickup surface by the image pickup optical system;
• and
• a blur correcting mechanism for correcting blur of the subject image formed on the image pickup surface, by moving relative positions of an optical axis of the image pickup optical system and the image pickup element, within a surface perpendicular to the optical axis,
• wherein when an image is picked up, a position of the image pickup element is defined based on information of a center position which has been obtained previously, the method for adjusting the image pickup device comprising:
• an initial position moving step of moving the position of the image pickup element to an initial position;
• an image pickup step of picking up a uniform luminance surface with the image pickup element at the initial position and converting an image of the uniform luminance surface into image signal;
• a luminance-distribution calculating step of calculating a luminance distribution on the image pickup surface based on the image signal obtained in the image pickup step;
• a center-shift-information calculating step of calculating information of a center shift based on information of the luminance distribution on four corners of the image pickup surface;
• a center-agreement judging step of judging whether data of the luminance distribution on the four corners of the image pickup surface almost agree with each other, based on the information of the center shift;
• and
• a center-position-information recording step of obtaining a position of the image pickup element under a condition that the data of the luminance distribution on the four corners of the image pickup surface almost agree with each other, based on a result of the center-agreement judging step, and of recording the position of the image pickup element in the image pickup device as information of a center position.