Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With auxiliary lenses movable in and out of the optical path
Patent
1995-06-14
1996-01-30
Sikes, William L.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With auxiliary lenses movable in and out of the optical path
351 41, 351230, 351231, G02C 708
Patent
active
054884390
ABSTRACT:
A lens holder system for temporarily holding a prescription lens in the openings eyeglass frames having perimeter grooves so that the patient can see what a pair of eyeglass frames will look like on him or her. The system has a plurality of pairs of lens holders. Each lens holder includes a prescription lens, a prescription lens encircling portion, a pair of resilient spring wires fixed at first ends to opposite sides of the prescription lens encircling portion, and a pair of guides positioned on the lens encircling portion distant from the point of attachment of the first ends of the spring wires to the lens encircling portion. The second ends of the spring wires are slidably engaged with one of the guides and the second ends of the spring wires have terminal stops to prevent the spring wires from being withdrawn from the guides. The pair of spring wires form a pair of spring wire loops which extend outwardly from opposite sides of the lens encircling portion, and which can be contracted and expanded as desired to fit into the perimeter grooves of the eyeglasses to temporarily retain the prescription lenses in the eyeglass frame during a eyeglass frame selection process. The prescription lenses range in power from +1.00 Diopters to +8.00 Diopters and from -1.00 Diopters to -12.00 Diopters, preferably in one Diopter increments.
REFERENCES:
patent: 4029402 (1977-06-01), Noble
patent: 4269487 (1981-05-01), Young
Dang Hung Xuan
Sikes William L.
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