Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Lorgnette type
Patent
1996-05-10
1997-02-18
Mai, Huy
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Lorgnette type
351 41, 351 57, G02C 304, G02C 708
Patent
active
056045484
ABSTRACT:
An emergency lorgnette making it possible for a user having defective eyesight to see reasonably well regardless of the nature of the defect. The lorgnette is molded of transparent synthetic plastic material to define a strip having formed at one end thereof a handle and along its length in alignment with the upper edge of the strip, first and second pairs of lenses in staggered relation, whereby the left eye lenses of the two pairs which are adjacent each other are spaced from the right eye lenses of the two pairs which are adjacent each other. Indented in the lower edge of the strip are first and second notches, each of which is adapted to receive the bridge of the user's nose when the lorgnette is held by its handle adjacent the eyes of the user. The first notch is placed midway between the left and right eye lenses of the first pair, the second notch being placed midway between the left and right eye lenses of the second pair. The lenses of the first pair have a high diopter and those of the second pair, a relatively low diopter. Hence when using the lorgnette, the user selects a notch aligning that pair of lenses with his eyes which affords the best optical accommodation to the reading matter or object being viewed.
REFERENCES:
patent: 5110197 (1992-05-01), Arad
Ebert Michael
Mai Huy
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