Geometrical instruments – Gauge – Spectacle
Patent
1976-06-21
1980-06-24
Little, Willis
Geometrical instruments
Gauge
Spectacle
33174D, A61B 310
Patent
active
042088003
ABSTRACT:
A device for use in the art of fitting lenses to spectacle frames wherewith ophthalmic measurements are applied directly to frames selected by patients. A frame without lenses is adjusted to fit the patient, the measuring device is then applied to the frame and the whole placed upon the face. Horizontal and vertical measurements of distances from lateral and inferior points on the frame rims to a desired location of lens optical center relative to pupil are made for each eye and these measurements are forwarded to the lens finishing shop for edging and fitting of the lenses.
REFERENCES:
patent: 2491312 (1949-12-01), Henry et al.
Grolman Bernard
Richards William
American Optical Corporation
Duggan Jeremiah J.
Little Willis
Schneeberger Stephen A.
Spencer Alan H.
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