Toric lens fining apparatus
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United States of America Patent
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-
Feb 4, 1992
Grant Date -
N/A
app pub date -
Sep 11, 1989
filing date -
Sep 11, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fining apparatus to finish the surface of an ophthalmic toric lens including a frame, a compound arcuate tool, a lens holding assembly, a motor for driving the tool in an orbital motion and the operative length of the tool is defined by the equation L=1/k.theta. for a half angle of orbit excursion .theta. between 0.25 and 2.25 degrees.
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Cited Art Landscape
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