Method for molding contact lenses using microwave energy
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United States of America Patent
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Jun 28, 1983
Grant Date -
N/A
app pub date -
Feb 27, 1981
filing date -
Feb 28, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a fabrication method for molding a contact lens with the required optical qualities. This method consists in designing a mold (1, 2) of high thermal inertia, which is transparent to, or little absorbing the electromagnetic microwave frequencies between 10.sup.6 Hz and 10.sup.11 Hz, in developing a base composition from polymerizing double-bond monomers which are absorbing with respect to the above microwaves, and in ensuring the polymerization of the composition within the closed mold by irradiation with the above cited electromagnetic waves at a power density suited to keep the temperature at the mold level approximately below 40.degree. C.
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