Ophthalmoscope with linear polarizer

Details Ophthalmoscope with linear polarizer Ophthalmoscope with linear polarizer

1989-08-23

1991-03-12

Dzierzynski, Paul M.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351218, A61B 310

Patent

active

049988182

ABSTRACT:
An ophthalmoscope is provided with a slidably mounted rack which carries two polarizing filters mounted at right angles to each other so as to simultaneously position one filter in the light path and the other in the viewing path. The rack also carries a clear lens and a red-free filter for optional positioning in the light path.

REFERENCES:
patent: 3501228 (1970-03-01), Speelman
patent: 4526449 (1985-07-01), Newman et al.
patent: 4643546 (1987-02-01), Richards

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