| abstract |
The present invention provides an optical assembly that includes optical elements that are insert molded directly onto an optical stack. The optical stack includes an optical film, and may include a liner, wherein the optical film is disposed between the optical element and the liner. The liner, if included, can be removed from the optical film without substantial damage to the optical film. The outermost layer of the optical film may be diffusion bonded to the major surface of the optical element. The optical film includes a protective coating having an average thickness of no more than 30 microns. The protective coating comprises an at least partially cured composition. The composition comprises 70% to 96% by weight of a urethane (meth)acrylate compound having an average (meth)acrylate functionality of 2 to 9.5, and 2% to 20% by weight of a urethane (meth)acrylate compound having an average (meth)acrylate functionality of 2 to 9.5. (meth)acrylate monomers of 1 to 2 (meth)acrylate functionality. |