Patent attributes
An ophthalmic photographic apparatus comprises a photographic mask for defining a fundus photography range, a photographic stop for eliminating light reflected from an anterior portion of the eye, and a focusing lens for bringing the fundus into focus. The photographic mask and the photographic stop are interlocked and move as one unit relative to the movement of the focusing lens in such a way that with respect to a photographic optical system, the photographic mask is maintained at a position substantially conjugate with an imaging plane of a CCD and the photographic stop is maintained at a position substantially conjugate with an anterior portion of the eye. The CCD is located at the image-side focal plane of the image-formation lens, the mask is located on the object-side focal plane of the focusing lens, and the photographic stop is located on the image-side focal plane of the focusing lens.
