| 摘要 |
PROBLEM TO BE SOLVED: To provide an ophthalmographic apparatus capable of capturing a high-quality image of a fundus oculi without generating harmful light such as flare in a simple configuration.SOLUTION: An illumination dual-aperture diaphragm is disposed near a conjugate position of an anterior eye part of a subject's eye and spot-like illumination light beams 11a' and 11b' are formed on a pupillary surface 31. An illumination slit diaphragm is disposed at a conjugate position of the fundus oculi and slit-like illumination light 40 is formed on the fundus oculi. An imaging diaphragm is disposed at a conjugate position of the anterior eye part of an imaging optical path, and spot-like imaging light 40' is formed at a position that is not overlapped with the spot-like illumination light beams 11a' and 11b'. The illumination slit diaphragm is rotated about an optical axis and the fundus oculi is sequentially illuminated by the slit-like illumination light 40 rotating accordingly, and photographed. The illumination dual-aperture diaphragm is also rotated in conjunction with the illumination slit diaphragm. Consequently, in any rotation position, the illumination light and imaging light become narrow-angle light beams so as to prevent an occurrence of flare.SELECTED DRAWING: Figure 3 |
