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POLARIZED EYEWEAR USING HIGH IMPACT, HIGH OPTICAL-QUALITY POLYMERIC MATERIAL
POLARIZED EYEWEAR USING HIGH IMPACT, HIGH OPTICAL-QUALITY POLYMERIC MATERIAL
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机译:使用高冲击力,高光学品质聚合物材料的偏光眼镜
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摘要
Optical-quality polarized parts and methods for manufacturing the optical parts are disclosed. The optical-quality polarized parts comprise a high impact, lightweight, high optical quality polyurethane construct (102) and a polarizer (104) bonded to the construct. The construct may be a lens substrate wherein the polarizer is integrally bonded at or near the front surface (106) of the lens substrate. A sidefill gasket may be used to support and position the polarizer within a mold cavity for reproducibly forming the optical part. The polarizer may comprise a polyethylene terephthalate film or a laminated polyvinyl alcohol film or wafer. The polarized optical part has improved impact resistance over conventional thermoset resin parts, as well as better optical properties than similarly impact-resistant polycarbonate constructs.
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