Polarized Lenses Obtained by the Lamination of a Polarized Film
The present invention relates to optical articles coupled to polarized laminate films. Optic properties, production methods, and compositions of component film layers were examined. Film layer criteria were selected that results in laminate films with particular optic properties. Lamination of optical elements with the inventive laminate films results in improved transmission and clarity through the optical elements.
1 .- 15 . (canceled)
16 . An article comprising at least one outer surface, wherein the at least one outer surface comprises a film, said film comprising:
less than 500 features/mm 2 of micron-scale features; and
a maximum thickness variation of 1 μm and maximum slope of 0.05 μm/mm.
17 . The article of claim 16 , wherein the film further comprises short scale variations in the z-direction of less than 0.5 μm.
18 . The article of claim 17 , further comprising short scale variations in the z-direction of less than 0.3 μm.
19 . The article of claim 17 , further comprising a root mean square (RMS) of short scale variation of less than 250.
20 . The article of claim 16 , further comprising an ASTM haze % of less than 0.5.
21 . The article of claim 20 , further comprising an ASTM haze % of less than 0.3.
22 . The article of claim 16 , further comprising less than 300 features/mm 2 of micron-scale features.
23 . The article of claim 16 , wherein maximum thickness variation is 0.5 μm.
24 . The article of claim 16 , further comprising a root mean square (RMS) thickness variation of less than 100.
25 . The article of claim 16 , wherein the film is further defined as a multi-layer laminate film.
26 . The article of claim 25 , wherein the multi-layer laminate film comprises at least one layer of triacetyl cellulose film.
27 . The article of claim 25 , wherein the multi-layer laminate film comprises at least one polarizing film layer.
28 . The article of claim 27 , wherein the at least one polarizing film layer comprises polyvinyl alcohol.
29 . The article of claim 27 , wherein the at least one polarizing film layer is laminated between layers of triacetyl cellulose film.
30 . The article of claim 25 , further comprising at least one protective film layer on at least one outer surface.