Method for making ophthalmic lenses
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United States of America Patent
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-
Dec 13, 1994
Issued Date -
N/A
app pub date -
Jul 8, 1993
filing date -
May 18, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
A finished ophthalmic lens is made by using a pre-manufactured lens or lens wafer as a part of a mold for making the finished lens. A polymerizable lens material is injected between the lens or lens wafer and a conventional mold member and a trio of indexers are used to rotate the conventional mold member relative to the lens wafer, to adjust the spatial relationship between the conventional mold member and the lens or lens wafer, and to control the angular relation between them. The assembly is subjected to irradiation and the radiation cures the polymerizable lens material and fuses it to the lens wafer so that the lens or lens wafer becomes an integral part of the finished lens. A finished lens is made in less than one hour.
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