Methods for eyeglass lens curing using ultaviolet light
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United States of America Patent
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-
Jan 16, 2001
Grant Date -
N/A
app pub date -
Nov 11, 1998
filing date -
Apr 19, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method for making a plastic lens is provided. More particularly, a method for applying alternating periods of ultraviolet light to a lens forming composition is described. The lens forming composition is cured while controlling the rate of heat generation and/or dissipation via manipulation of the duration of the ultraviolet light or the cooling in the curing chamber. The ultraviolet light is preferably directed toward the lens forming composition which is disposed in a mold cavity formed by two mold members. The ultraviolet light may be directed in pulses or continuously.
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