Instrument for determining the setting of a lens edger device to

Details Instrument for determining the setting of a lens edger device to Instrument for determining the setting of a lens edger device to

1990-03-14

1990-12-25

Haroian, Harry N.

Geometrical instruments

Gauge

Lens

33200, G01B 500

Patent

active

049793110

ABSTRACT:
An instrument for use in optical laboratories for indicating the setting of a lens edger device based upon the relationship between a lens pattern or dummy lens and the lens opening of a spectacle frame into which a finished lens is to fit. The instrument can be used to determine the lens edger setting to produce a finished lens to fit both rimmed spectacle frames and rimless spectacle frames. The instrument gauges the size of the spectacle frame lens opening in relationship to either the lens pattern in the event of fitting a lens to rimmed spectacle frames, or a dummy lens in the event of fitting a lens to rimless spectacle frames.

REFERENCES:
patent: 3145417 (1964-08-01), Shatzel
patent: 3457652 (1969-07-01), Moffett
patent: 4707929 (1987-11-01), Bizer et al.

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