Automatic identification symbology suitable for contact lens manufacturing verification
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United States of America Patent
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N/A
Issued Date -
Jan 5, 2006
app pub date -
Jun 30, 2004
filing date -
Jun 30, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method of identifying one or more characteristics of an ophthalmic lens by embedding a second marking inside the perimeter of a first marking formed on the lens. In one embodiment, the first marking may be a toric marking indicative of the ballast and/or cylindrical axis and the second marking, placed inside the first marking, may indicate one or more other lens characteristic such as power, SKU or lot number, for example. The invention includes a lens made according to the method.
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