Special polycarbonate polarizing eyewear
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United States of America Patent
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Jul 18, 2017
Grant Date -
Jul 23, 2015
app pub date -
Aug 12, 2013
filing date -
Aug 14, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Eyewear uses a polarizing lens obtained by bending a multilayer polarizing sheet in which a sheet (A) including at least 50% by mass of an aromatic polycarbonate resin and having a retardation value of 2000 nm or less at a wavelength of 600 nm is layered on one side of a polarizing film, and a sheet (B) including a special polycarbonate resin obtained by carbonate bonding a dihydroxy compound through use of a carbonic acid diester, the polycarbonate resin being a compound in which 70-100 mol % of the dihydroxy compound is represented by general formula (1), is layered on the other side of the polarizing film.
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International Classification(s)
- C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
- A61F:FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G02C:SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY ....
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- D02G:CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR T....
- C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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