Light control film and method of fabricating same

A light control film comprising a plurality of optically transparent spaced apart polymeric fiber cores substantially surrounded by a common light absorbing polymeric cladding, the fiber cores comprising corresponding fiber core ends seemingly irregularly arranged at a major surface of the light control film, such that an average radial power spectral density of the fiber core ends as a function of a spatial frequency in a cross-section of the light control film in a plane substantially orthogonal to a thickness direction of the light control film comprises a first peak region comprising one or more local peaks and defined by a full width at half maximum (FWHM) of between about 5 and about 150 inverse mm.

A method of fabricating a light control film, the method comprising, in sequence:

• providing a plurality of substantially parallel optically transparent first polymeric columns extending along a same first direction and disposed in, and substantially surrounded by, a light absorbing polymeric material, the first polymeric columns defining a plurality of substantially optically transparent gaps therebetween, each of the first polymeric columns comprising a polymeric fiber core and having a lateral cross-sectional first shape;
• and
• applying at least one of pressure and heat to the plurality of first polymeric columns along at least one second direction substantially orthogonal to the first direction, the at least one of pressure and heat at least reducing a size of at least some of the gaps and modifying each of the first polymeric columns to a corresponding second polymeric column having a lateral cross-sectional second shape different than the cross-sectional first shape of the first polymeric column.