CPC G02B 5/285 (2013.01) [G02B 1/041 (2013.01); G02B 1/14 (2015.01); G02B 5/287 (2013.01); G02B 5/305 (2013.01); B29D 11/00548 (2013.01); G02B 5/0816 (2013.01); G02B 5/3025 (2013.01)] | 17 Claims |
1. An optical assembly, comprising an optical element insert molded directly onto an optical stack, the optical stack comprising an optical film and a liner, the optical film being disposed between the optical element and the liner,
wherein the optical film comprises a plurality of alternating polymeric layers reflecting or transmitting light primarily by optical interference, each location over at least 80% of a total area of the optical film having a reflectance greater than about 80% for normally incident light having a same predetermined wavelength and a same first polarization state,
wherein the liner is removable from the optical film,
wherein the optical film comprises a protective coating facing the liner and having an average thickness of no more than 30 micrometers, and
wherein the protective coating comprises an at least partially cured composition, the composition comprising:
a) 70 to 96 weight percent of urethane (meth)acrylate compound having an average (meth)acrylate functionality of 2 to 9.5, based on the total weight of components a) to d);
b) 2 to 20 weight percent of (meth)acrylate monomer having a (meth)acrylate functionality of 1 to 2, based on the total weight of components a) to d), wherein the (meth)acrylate monomer does not comprise a urethane (meth)acrylate compound;
c) optional 0.5 to 2 weight percent of silicone (meth)acrylate, based on the total weight of components a) to d);
d) optional effective amount of photoinitiator;
e) optional inorganic nanoparticles; and
f) optional solvent.
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