US Patent Issued to Distributed Polarization on Sept. 8 for "Method and Apparatus for Making Polarized Sunglasses" (Massachusetts Inventors)
ALEXANDRIA, Va., Sept. 9 -- United States Patent no. 9,128,302, issued on Sept. 8, was assigned to Distributed Polarization Inc. (Boston).
"Method and apparatus for making polarized sunglasses" was invented by Giorgio Trapani (Cambridge, Mass.) and Robert K. Tendler (Chestnut Hill, Mass.).
According to the abstract* released by the U.
S. Patent & Trademark Office: "In the manufacture of gradient polarized sunglasses an optical retarder is used in front of a portion of a polarized lens to destroy the linear polarization of incoming light to render that portion of the sunglass lens non-polarized, thus to permit viewing of polarized displays through that non-polarized portion of the polarized sunglass lens. …
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