Polarized lens and method of making the same
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United States of America Patent
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Jun 13, 1989
Grant Date -
N/A
app pub date -
Apr 27, 1987
filing date -
Apr 27, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sunglass lens has two mounds of ground mineral glass laminated together with a polarization film to form a single lens having inner and outer surfaces. The inner surface is provided with an anti-reflectant coating and the outer surface is provided with a bigradient coating. A process for making the lens is also disclosed in which bigradient material is vaporized in a vacuum coating machine.
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