Low vision enhancing optical system with movable mirrors

Details Low vision enhancing optical system with movable mirrors Low vision enhancing optical system with movable mirrors

1999-01-26

2000-05-23

Dang, Hung Xuan

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Combined

359407, G02C 100

Patent

active

060658355

ABSTRACT:
An optical system is capable of enhancing vision of low vision individuals using a simple adjustment mechanism that requires a minimum length of travel to effect a desired adjustment. First and second substantially perpendicular mirrors are mounted in a cluster for substantially linear movement. A third mirror is substantially parallel to the first mirror and pivotal about an axis substantially transverse to the direction of linear movement of the cluster. Pivotal movement of the third mirror may be automatic in response to linear movement of the mirror cluster so as to ensure substantially proper convergence when the object to be viewed is about one meter (or closer) from the objective lens or lenses in a binocular system. A fourth mirror is substantially parallel to the second mirror and substantially perpendicular to the third mirror. An objective lens cooperates with the first and third mirrors, and an eyepiece lens with the second and fourth mirrors. The system, whether monocular or binocular, may be mounted on eyeglasses.

REFERENCES:
patent: 4704000 (1987-11-01), Pekar et al.
patent: 5680195 (1997-10-01), Pekar et al.
Goldberg, "Self-Focusing Infrared Telescopic Glasses May Restore Sight to Millions", Electronic Design, Apr. 14, 1997.

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