Filter apparatus for retinoscope

Details Filter apparatus for retinoscope Filter apparatus for retinoscope

1991-09-11

1993-04-06

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351215, 351221, A61B 310

Patent

active

052007723

ABSTRACT:
A retinoscope is provided with a hinged light filter carrier assembly for slidably positioning first and second polarizing filters in the light transmission and viewing passageways. A single actuating lever is provided to move the light filter members into operative position and to retract them out of alignment with the viewing passageways.

REFERENCES:
patent: 4998818 (1991-03-01), Kugler et al.

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