Method of forming a convergent lens in a plate of transparent mineral material
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United States of America Patent
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Apr 29, 1986
Grant Date -
N/A
app pub date -
Apr 2, 1984
filing date -
Mar 31, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is described of forming a circular convergent lens in a plate of transparent mineral material, which involves grinding the lens with a grinding member having a lesser diameter than the lens and imparting an oscillatory motion to the plate relatively to the grinding wheel. This method also enables self-dressing of the grinding member.
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