Lens tether

Details Lens tether Lens tether

2006-11-14

2006-11-14

Mai, Huy (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With auxiliary lenses movable in and out of the optical path

C351S047000, C351S111000

Reexamination Certificate

active

07134751

ABSTRACT:
A visual acuity system is disclosed. The system comprises a pair of eyeglasses, or in the alternative, a pair of sunglasses. The pair of eyeglasses or sunglasses has a metallic frame so that a magnetic “clip-on” lens can be attached by only using magnetic attachment means. Furthermore, a coiled spring is used to connect the “clip-on” lens to the pair of eyeglasses or sunglasses so that even when the clip-on lens is not in use, it will be in close proximity to the eyeglasses or sunglasses. The coiled spring will also prevent the clip-on lens from becoming lost.

REFERENCES:
patent: 5005263 (1991-04-01), Barrett
patent: 5557345 (1996-09-01), Katzenmeyer
patent: 5956812 (1999-09-01), Moennig
patent: 6783238 (2004-08-01), Stepper
patent: 61-57923 (1986-03-01), None

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