| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem in which the phenomenon that an edge of an observed image becomes sharp at a focusing point and out of focus at other points is noticable before when a sample is observed through an optical microscope, but this phenomenon is not applicable quite suitably to the observation of a particle body etc. in a sample medium by means of a phase-difference microscope. <P>SOLUTION: An observed image of the phase-difference microscope is analyzed to regard as an optimum focus point the position where the sizes and number of images of an observed solid body are maximum. Further, proposed a method of selective focusing on a specified observed object by focus control in which the shape of the observed object is noticed. <P>COPYRIGHT: (C)2004,JPO |
