Fundus camera for photography using a fluorescent agent

Details Fundus camera for photography using a fluorescent agent Fundus camera for photography using a fluorescent agent

1991-12-10

1993-09-21

Arnold, Bruce Y.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351206, 351207, 354 62, 2504581, A61B 310

Patent

active

052473180

ABSTRACT:
The fundus camera of this invention for taking photographs by fluorescence comprises an exciter filter 7 in an illuminating optical system 1, and a barrier filter 16 in a photographic optical system 2. A member 11 for eliminating harmful reflected light from an objective lens 13 is also provided in the illuminating optical system 1. This member 11 for eliminating harmful reflected light comprises dark spots 21, 22, which transmit light below a lower wavelength limit, and cut out light above the lower wavelength limit, of the barrier filter 16.

REFERENCES:
patent: 4452517 (1984-06-01), Kobayakawa
patent: 4690525 (1987-09-01), Kobayashi et al.
patent: 4799783 (1989-01-01), Takahashi et al.

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