Optical system including light control film and fresnel lens

An optical system comprising:

• an optical film curved about a first axis and comprising a microstructured first major surface and an opposing second major surface, the microstructured first major surface defining a linear Fresnel lens comprising a plurality of Fresnel elements extending longitudinally along the first axis, each Fresnel element comprising an optical facet and a sidewall meeting the optical facet at a ridge of the Fresnel element, wherein for each Fresnel element in at least a majority of the Fresnel elements, an optically absorptive layer is disposed on and substantially covers the sidewall, the optically absorptive layer having an average thickness t, 100 nm<t<1 micrometer;
• a light control film curved about the first axis and disposed proximate the optical film, the first major surface of the optical film facing the light control film, the light control film comprising a plurality of alternating optically transmissive and optically absorptive regions extending longitudinally along the first axis such that in a cross-section orthogonal to the first axis, for at least a majority of the optically transmissive regions, a centerline between adjacent optically absorptive regions is substantially normal to a major surface of the light control film.