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1. An optical assembly, comprising:
a light directing film having an average effective transmission of at least 1.3; a light diffusing film having an optical haze of at least 5%; and a plurality of spaced apart posts disposed and defining an air gap between the light directing and diffusing films, the plurality of spaced part posts being disposed on a first major surface of a substrate having an opposing second major surface, a first end of each post being attached to the first major surface of the substrate, an opposing second end of each post being attached to the light diffusing film via a first adhesive layer, the first adhesive layer forming a meniscus at each post, the meniscus having an outer surface radius of at least 0.5 micrometers.
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