Illuminated progressive lens marker

Details Illuminated progressive lens marker Illuminated progressive lens marker

1997-06-04

1999-10-12

Roskoski, Bernard

Geometrical instruments

Scriber

Curved line

33507, B43L 1100, G01B 100

Patent

active

059640405

ABSTRACT:
A machine for marking the location for determining the correct prescription of progressive optical lens including a diffused light source, a platform for supporting the progressive lens intended to be marked in the illumination from the light source, an optical reference element having visible indicia thereon for contact against the progressive lens to locate the symbols on the lens that indicate the position of a reference line thereon, and a marker including adjustable marker elements for contact against the lens in alignment with the reference line, to apply temporary opaque symbols on the progressive lens from which the lens prescription can be determined.

REFERENCES:
patent: 4977675 (1990-12-01), Jewett

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