Spectacle lens marking device

Details Spectacle lens marking device Spectacle lens marking device

1977-08-25

1978-09-26

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

356127, G01B 1127

Patent

active

041159241

ABSTRACT:
A device is provided for use with a lensometer which will adjustably hold a ground lens as it is moved until its optical center coincides with the line of sight of the lensometer. The device is provided with two spaced apart, fixed markers and a line passing therethrough will indicate a horizontal line passing through the optical center of the lenses when they are fitted into the frames of the eye spectacle. The device is also provided with a movable marker, movable precise amounts in accordance with the prescription of an individual patient for a particular spectacle frame to indicate the geometric center of that lens when mounted in that spectacle frame and for that particular patient.

REFERENCES:
patent: 1622776 (1927-03-01), Fisher
patent: 1958275 (1934-05-01), McCabe
patent: 2723594 (1955-11-01), Lueck
patent: 2803884 (1957-08-01), Polley
patent: 3002285 (1961-10-01), Wright

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