| 摘要 |
PROBLEM TO BE SOLVED: To precisely and easily realize the direction matching and alignment of blood vessels on an eyeground. SOLUTION: A CCD array sensor expands an eyeground image Ea' to be shown in a bar-like area I in the direction of an axis D orthogonal with an axis A and displays it on a television monitor 113 as a blood vessel image Ev'. Based on the image Ev', a blood vessel analytic circuit calculates the moving quantity of the image Ev', a galvanometric mirror is rotated with the driving signal of a controller and the photodetecting position of the image Ev' on the CCD array sensor is kept to be constant. Consequently, the axis A and the image Ev' are matched to compensate moving of the image Ev' projected on the monitor 113, especially fixation slow motion only in one direction of the axis D. |
