Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With vertical adjustment of multifocal lenses
Patent
1996-02-26
1997-10-21
Mai, Huy
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With vertical adjustment of multifocal lenses
G02C 706
Patent
active
056801939
ABSTRACT:
A device positioned on the nose of a wearer of eyeglasses with bifocal lenses having the lens lower parts corrected for near vision. The device includes a housing that defines a nose cavity having an inner surface defining a matrix for receiving the upper nose portion of the nose of the wearer of the eyeglasses. The housing positions the lens bridge above the nose of the wearer so that the bifocal lenses are also raised relative to the eyes of the wearer, whereby when the sight lines of the wearer are directed in a generally horizontal direction, the sight lines are aligned through the lens lower parts. The housing includes a convex surface for supporting the lens bridge and the inner sides of the two lens rims. A keeper structure connected to the housing holds the eyeglasses in position relative to the housing.
REFERENCES:
patent: 2801569 (1957-08-01), Ralph
patent: 3087383 (1963-04-01), Ralph
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