METHOD FOR PROCESSING OPTICAL INFORMATION AND DEVICE FOR PROCESSING OPTICAL INFORMATION

摘要

Disclosed is a method and a device wherein an initial value of a degree of movement of an SA quantity control device and a degree of movement of an FO quantity control device is treated as a point A, a point B and C, with different x-axis coordinates from the point A, are set, an approximate two-dimensional curve of a performance assessment value is computed from each respective performance assessment value and each respective x-axis coordinate for the points A - C, a point D is set upon a straight line L that has a preset slope and intersects the point A, points E and F are set using the performance assessment values of the approximate two-dimensional curve and the point D, a performance assessment value of a point J with an x-coordinate equivalent to the x-coordinate of the point D and a y-coordinate equivalent to the y-coordinate of the point A is computed based on the approximate two-dimensional line, a point G with an x-coordinate equivalent to the x-coordinate of the point D and a performance assessment value equivalent to the performance assessment value at the point D is computed based on a preset ratio r1 and the performance assessment value at the point J, an ellipse (50) that intersects the points D - G is computed, a central point H therein is computed, and the SA and the FO are adjusted such that a point that is determined according to the degree of movement of the SA quantity control device and the degree of movement of the FO quantity control device moves from the point A to the point H.