| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fundus camera for inexpensively and easily improving nonuniformity in the light amount of a fundus photographing image. <P>SOLUTION: This fundus camera includes an optical photographing system for photographing the fundus oculi of an eye illuminated by an optical illumination system. The optical illumination system comprises an illumination light source for photographing the fundus oculu of the eye; a condenser lens being the lens for collecting a light flux from the illumination light source and by which the focal position of an eye to be examined is arranged to be a fundus oculi conjugation position; a ring slit which is arranged in a pupil conjugation position and allows the light flux from the illumination light source via the condenser lens to be a ring shape illumination light flux; and a filter which is arranged at a position in a light path between the condenser lens and the illumination light source, where the light flux for illuminating the center part of the fundus oculi is separated from the light flux for illuminating the peripheral part of the fundus oculi, and which is formed to allow the transmission ratio of a center area to be uniformly smaller than that of a peripheral area. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
