| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an eye fundus photographing system capable of focusing easily and consistently during the photographing operation of the fundus. <P>SOLUTION: The fundus of a test eye is photographed through a photographing aperture 28 having two openings 28a, 28b with CCD 40 as an electronic image. During observation, the two openings of the photographing aperture are released and focusing is operated from the image of the fundus obtained through the two openings. If the fundus is out of focus, the images of the fundus passed through the two openings are different and observed as double image, and the focus is adjusted to make them one image of the fundus. This configuration makes it easy to find defocus, and the focus mark and the projective mechanism of the focus mark are not needed, so that the device becomes easy optical configuration as a whole to keep the cost of manufacturing reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT |
