Compact telescoping retinoscope

Details Compact telescoping retinoscope Compact telescoping retinoscope

1994-10-28

1995-10-17

Sikes, William L.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351216, 351221, A61B 310

Patent

active

054595355

ABSTRACT:
The present invention is directed to a compact retinoscope which telescopes to a closed position in order to allow the instrument to be stored in a pocket or pocket carrying case. As the instrument body or head is pushed downward to its closed position, a main internal sleeve travels upwards (relative to the head) to contact and swing a beam splitter mount positioned within the head of the instrument up into a stored position. In the stored position the reflecting means (beam splitter) of the device are positioned in a secured manner which provides added security against damage to the reflecting means if the instrument or carrying case is accidentally dropped. When the instrument head is pulled to its open or functional position, a wire-form spring positioned within the head biases the beam splitter mount back to its functional position.

REFERENCES:
patent: 5189449 (1993-02-01), Perkins
patent: 5200772 (1993-04-01), Perkins et al.
patent: 5202710 (1993-04-01), Perkins

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