Apparatus for determining the diameter of a lens to fit an eyegl

Details Apparatus for determining the diameter of a lens to fit an eyegl Apparatus for determining the diameter of a lens to fit an eyegl

1986-02-28

1986-12-02

Stearns, Richard R.

Geometrical instruments

Gauge

Spectacle

33507, G01B 500, A61B 310

Patent

active

046254188

ABSTRACT:
Apparatus for determining the diameter of an unprocessed ophthalmic lens to fit a particular eyeglass frame comprises a base and a guide on the base adapted to receive a card carrying diagrams of available lenses. A support on the base is adapted to receive the eyeglass frame to be fitted with lenses. The card guide is fixed relative to the base and comprises an elongate slot adapted to allow the card to slide within it. The frame support is mobile relative to the card guide in the direction at right angles to the slot.

REFERENCES:
patent: 3145417 (1964-08-01), Shatzel
patent: 3313031 (1967-04-01), Lowe
patent: 3740857 (1973-06-01), Nerad
patent: 4196978 (1980-04-01), Johnson
patent: 4299032 (1981-11-01), Young
patent: 4309826 (1982-01-01), Negroni

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