Illuminating device for use in a funduscopic apparatus

Details Illuminating device for use in a funduscopic apparatus Illuminating device for use in a funduscopic apparatus

1978-07-24

1980-08-26

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

351 7, 354 62, A61B 310, A61B 314, G03B 2900

Patent

active

042192587

ABSTRACT:
An illuminating device for use in an ophthalmoscopic photographing apparatus comprising an objective lens system arranged near an eye to be inspected in a main optical viewing path, a photographing lens system arranged in the main optical path for imaging a light pattern reflected from the retina of the eye to be inspected on the surface of a film through the objective lens system, and a light guide arranged the main optical viewing path and an illuminating optical path. The light guide consists of a bundle of optical fibers one end portion of which is so constructed that a plurality of optical fibers uniformly enclose a light passing tube to form a concentric circle or partially enclose the light tube.

REFERENCES:
patent: 3556085 (1971-01-01), Takahasi
patent: 3780979 (1973-12-01), De Guillebon
patent: 3915564 (1975-10-01), Urban
patent: 4023189 (1977-05-01), Govignon

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