Variable pitch lapping block for polishing lenses
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United States of America Patent
Stats
-
Sep 13, 1994
Grant Date -
N/A
app pub date -
Apr 6, 1993
filing date -
Apr 6, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A variable pitch lapping block for use in polishing a range of prescription lenses having different radii of curvatures is obtained by the use of an element made of rubber or the like, which is associated with a pressurized chamber, wherein the element exhibits a range of curvatures depending upon the variation of the pressure in the chamber.
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Family
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Cited Art Landscape
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