摘要 |
<p>In various aspects, the present invention provides optical bodies configured and arranged to reflect at least a portion of light over at least one wavelength region, the bodies comprising a plurality of first optical layers comprising a polyester having terephthalate comonomer units and ethylene glycol comonomer units and a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers. In other aspects, the invention provides optical bodies comprising a plurality of first optical layers, each first optical layer being oriented; and a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers, each second optical layer comprising a blend of polymethylmethacrylate and polyvinylidene fluoride. The materials are chosen such that they have compatible glass transition temperatures for orienting the layers.</p> |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
CONDO, PETER, D.;HEBRINK, TIMOTHY, J.;WHEATLEY, JOHN, A.;OUDERKIRK, ANDREW, J.;RUFF, ANDREW, T.;LIU, YAOQI, J.;ANDRUS, MILTON, H., JR. |