Ophthalmic photographic apparatus

Details Ophthalmic photographic apparatus Ophthalmic photographic apparatus

1986-07-15

1987-07-14

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

354 62, A61B 314, G03B 2900

Patent

active

046799192

ABSTRACT:
In an opthalmic photographing apparatus, capable of photographing the fundus of an eye to be examined at a variable magnification, being provided with a ring slit in an illuminating optical path at a position substantially conjugate with the front-eye-part and being further provided with a baffle at a position substantially conjugate with the crystalline lens, the slit width of a ring slit image projected onto the eye to be examined and further the size of a baffle image are variable with a magnification change.

REFERENCES:
patent: 4265518 (1981-05-01), Matsumura
patent: 4439024 (1984-03-01), Ito
patent: 4558932 (1985-12-01), Numokawa

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