CURVED RETARDER BASED OPTICAL FILTERS AND EYEWEAR
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United States of America Patent
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Issued Date -
Apr 12, 2012
app pub date -
Dec 20, 2011
filing date -
Oct 11, 2007
priority date (Note) -
Abandoned
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Abstract
Curved polarization filters and methods of manufacturing thereof. One method includes laminating a planar polarization layer to a planar retarder layer at a predetermined orientation and bending the laminate to create a curved filter. The strain on the retarder layer results in stress-induced birefringence, and the predetermined orientation of the retarder substantially compensates for the stress-induced birefringence.
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