Process for preparation of spectacles

Details Process for preparation of spectacles Process for preparation of spectacles

1984-11-29

1988-08-09

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

For interpupillary distance measuring or lens positioning

351200, 351205, 351246, A61B 310

Patent

active

047624078

ABSTRACT:
The process in accordance with the present invention is especially well-suited for the preparation of spectacles with a correction effect which are adapted both optically and mechanically, whereby the mechanical adaptation is objectified to at least a considerable degree and the mechanical adaptation depends to a lesser extent or not at all on subjective evaluations of the fits of the spectacles on the part of the fitter or the spectacle wearer. For each nose piece of the spectacles the location of at least one nose point on or near the contact surface at which the bridge reposing surface touches the nose, is measured in space relative to two reference points, for example, the eye centers. From this nose point measurement the location of the pad nose piece reposing surface which the latter is to occupy in space on the completed spectacles is determined, which occurs, for example, under the assumption of pressureless contact between the contact surface and the reposing surface. Corresponding to this determination the nose piece of the spectacles are physically shaped, specifically in their correct relative position with respect to the lenses since a target position has been predetermined for the lenses with respect to two reference points in space.

REFERENCES:
patent: 397744 (1889-02-01), Meyrowitz
patent: 780948 (1905-01-01), Hales
patent: 2302190 (1942-11-01), Collins
patent: 2677894 (1954-05-01), Belgard
Fischbach, "Aids to Vision . . . ", published in Status in Fitting Spectacles, Pamphlet No. 2.
NATO, "Applications of Human Biosterometrics", published in SPIE, vol. 166 at pp. 235-243 (1978).
Platzek, "Brillenpassung . . . ", published in Feinmechanik und Optik, No. 11, 1955, pp. 292-297.

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