FILTER APPARATUS FOR RETINOSCOPE

FILTER APPARATUS FOR RETINOSCOPE

A retinoscope is provided with a hinged light filter carrier assembly (28) for slidably positioning first and second polarizing filters (60,62) in the light transmission and viewing paths (20,24). A single actuating lever (64) is provided to move the filter members into and to retract them out of th...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: MONROE, RICHARD A, PERKINS, DAVID G
Format: Patent
Sprache:eng
Schlagworte:
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Beschreibung
Zusammenfassung:A retinoscope is provided with a hinged light filter carrier assembly (28) for slidably positioning first and second polarizing filters (60,62) in the light transmission and viewing paths (20,24). A single actuating lever (64) is provided to move the filter members into and to retract them out of the light paths. The carrier assembly is a unitary frame member (32) with a back portion (34,36,38) and a lower portion (52, 54) which slide in respective pairs of grooves (56-59) in the retinoscope housing (12) and are mechanically synchronized by a pair of struts (44,46) joined by living hinges (40,42,48,50) to the frame members.